What is the value of a 25 carat diamond?

The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.

What is a 24-carat diamond?

A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.

Is there a three-carat diamond?

Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.

How large is a 3-carat diamond?

In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.

How big is a 12 carat diamond?

The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.

What is a 7 carat diamond worth?

A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.

What is a 9 carat diamond worth?

A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.

What is a 3 carat diamond worth?

A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.

What is 1 carat diamond worth?

Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.

How many carats should a diamond necklace be?

There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.

How rare is a nine-carat diamond?

A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.

What is an 8 carat diamond worth?

An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.

What is a 4 carat diamond worth?

A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.

What is a 6 carat diamond worth?

A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.

What is a 5 carat diamond worth?

A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.

Is a 1.5-carat diamond too big?

Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.

Is a two-carat diamond rare?

Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.

Are half-carat diamond studs too small?

Whether half-carat diamond studs are too small is a matter of personal opinion. A pair of diamond studs with a total carat weight of 0.5 usually consists of two 0.25-carat earrings. Many jewelry makers offer studs as small as 0.13 carats, so many people consider half-carat diamond studs to be medium-sized. On 1stDibs, shop a collection of antique and vintage diamond stud earrings.

Are 2 carat diamond studs too big?

Whether two-carat diamond studs are too big is a matter of personal preference. At this size, each earring will be one carat. If you opt for the classic round brilliant cut, the studs will typically measure around 6.5 millimeters in diameter, which is a little more than half the size of a dime. Find a wide range of diamond stud earrings on 1stDibs.

Are 1.3-carat diamond earrings too small?

Whether 1.3-carat diamond earrings are too small is a matter of personal opinion. A pair of earrings with a total carat weight of 1.3 is considered to be medium-sized. The smallest diamond earrings are around 0.25 carats, while the largest are 1.5 carats or more. Explore a wide range of diamond earrings on 1stDibs.

25 Carat Diamond

25 Grams 18k Gold

Amethyst Eternity Ring

Zig Zag Ring

10 Carat Peridot Ring

Rainbow Light

White Gold Wedding Bands

Vintage Art Deco Diamond Bracelet

Rainbow Ring

Category

Mid-20th Century Band Rings

Materials

Diamond, Platinum

.25 Carat Diamond Platinum 1940's Band Ring

Diamond Heart Necklace, .25 Carat Diamond Open Heart Pendant Necklace

By Five Star Jewelry

Located in Austin, TX

This delicate open heart pendant has .25 carat total weight diamonds. It has 25 diamonds that are

Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Diamond Heart Necklace, .25 Carat Diamond Open Heart Pendant Necklace

L 18 in

25 Carat Diamond Tennis Necklace

By Antinori Fine Jewels

Located in Chicago, IL

Indulge in the unparalleled elegance of our tennis necklace with a total carat weight of 25 and a

Category

2010s Unknown Contemporary Link Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold, Gold

25 Carat Diamond Tennis Necklace

.25 Carat Diamond Platinum Hair Clip

Located in Hicksville, NY

Metal: Platinum Weight: 23.7 grams Center Diamond: Shape: Old European Cut Carat: .25 Carat

Category

Vintage 1920s Unknown Art Deco More Jewelry

Materials

White Diamond, Platinum

.25 Carat Diamond Platinum Hair Clip

.25 Carat Diamond White Gold Ring

Located in Bay Harbor Islands, FL

.25 Carat total weight diamond 18 Karat White Gold ring with 19 round cut diamonds. Metal Type: 18

Category

21st Century and Contemporary Unknown Band Rings

Materials

Diamond, 18k Gold, White Gold

.25 Carat Diamond White Gold Ring

.25 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Details: Weight: .25 carat Cut: Old European Brilliant Color: G Clarity: VS2 Finger to Top of Stone

Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.25 Carat Diamond Platinum Engagement Ring

.25 Carat Diamond Platinum Basket Dangle Earrings

Located in Stamford, CT

Vintage 1900's handmade basket dangle earrings set with 62 rose cut diamonds on simple wire hooks

Category

Early 20th Century Dangle Earrings

Materials

Diamond, Platinum

.25 Carat Diamond Platinum Basket Dangle Earrings

L 1.37 in

.25 Carat Diamond Open Work Dangle Earrings

Located in Stamford, CT

Open work diamond post clip dangle earrings. Set in 14 white gold with 62 round full cut diamonds

Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Gold, 14k Gold, White Gold

.25 Carat Diamond Open Work Dangle Earrings

L 1.36 in

.25 Carat Diamond Yellow Gold Engagement Ring

Located in Stamford, CT

Diamond engagement ring. Oval rose cut bezel set diamond in a 20/22k yellow gold setting. 1 oval

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold, 22k Gold, Yellow Gold

.25 Carat Diamond Yellow Gold Engagement Ring

1930s Important 25 Carat Diamond Platinum Bracelet

Located in New York, NY

cut diamonds - approximately 25 carats total, all stones range VS1-SI1, GH color. Bracelet id 6.5

Category

20th Century British More Bracelets

Materials

Diamond, Platinum

1930s Important 25 Carat Diamond Platinum Bracelet

.25 Carat Diamond White Gold Engagement Ring

Located in Hicksville, NY

Details: Shape: Old European Carat Weight: .25 carat Color: F Clarity: VS1 Finger to Top of Stone

Category

Vintage 1920s Unknown Edwardian Engagement Rings

Materials

White Diamond, 18k Gold, White Gold

.25 Carat Diamond White Gold Engagement Ring

.25 Carat Diamond White Gold Flower Cluster Earrings

Located in Stamford, CT

Diamond cluster stud earrings. 14 round brilliant cut diamonds in 14k white gold flower settings

Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Gold, 14k Gold, White Gold

.25 Carat Diamond White Gold Flower Cluster Earrings

W 0.24 in L 0.24 in

.25 Carat Diamond Heart Yellow Gold Stretch Bracelet

Located in Stamford, CT

Expandable diamond bracelet. 3 bezel set diamond cluster hearts. 18k gold yellow gold stretch bead

Category

21st Century and Contemporary Modern Bracelets

Materials

Diamond, Gold, 18k Gold, Yellow Gold

.25 Carat Diamond Heart Yellow Gold Stretch Bracelet

L 7.5 in

.25 Carat Diamond Gold Open Work Drop Earrings

Located in Stamford, CT

1940's Open work detailed drop diamond earrings. 52 round cut diamonds set in a 14k white gold

Category

Vintage 1940s Drop Earrings

Materials

Diamond, 14k Gold, White Gold, Gold

.25 Carat Diamond Gold Open Work Drop Earrings

L 1.73 in

.25 Carat Diamond White Gold Cross Pendant Necklace

Located in Stamford, CT

Vintage 1925-1930 18k white gold cross with excellent detailing, 17 rose cut diamonds and one

Category

Early 20th Century Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

.25 Carat Diamond White Gold Cross Pendant Necklace

L 18 in

.25 Carat Diamond Yellow Gold Spray Cocktail Ring

Located in Stamford, CT

Vintage 1980's spray design diamond cocktail ring. 42 round brilliant cut diamonds set in a 14k

Category

Late 20th Century Cocktail Rings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

.25 Carat Diamond Yellow Gold Spray Cocktail Ring

Celtic .25 Carat Diamond 14k White Gold Dangle Earrings

Located in Laguna Hills, CA

diamond. The diamond weight is .25 carat total, and the quality of SI1 is G-H's color. The earring

Category

21st Century and Contemporary Northern Irish Modern Drop Earrings

Materials

Diamond, 14k Gold, White Gold

Celtic .25 Carat Diamond 14k White Gold Dangle Earrings

L 1 in

.25 Carat Diamond Yellow Gold Art Nouveau Engagement Ring

Located in Stamford, CT

Handmade original Art Nouveau .25 carat rose cut diamond in a pierced and carved 18k yellow gold

Category

Antique Late 19th Century Engagement Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

.25 Carat Diamond Yellow Gold Art Nouveau Engagement Ring

.25 Carat Diamond Sapphire White Gold Dome Engagement Ring

Located in Stamford, CT

Vintage 1930's diamond and sapphire filigree engagement ring. Dome style with a old euro center

Category

Early 20th Century Engagement Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold

.25 Carat Diamond Sapphire White Gold Dome Engagement Ring

Peter Suchy .25 Carat Diamond Platinum Eternity Wedding Band Ring

By Peter Suchy

Located in Stamford, CT

Alternative eternity diamond wedding band ring. 5 round brilliant cut diamonds set in a solid

Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Peter Suchy .25 Carat Diamond Platinum Eternity Wedding Band Ring

Art Deco Platinum 8 Carat Sapphire 25 Carat Diamond Bracelet

Located in New York, NY

: Excellent Gemstone: Sapphire, Diamond Sapphire Weight: 8 CT Diamond Weight: 25 CT Total Item Weight: 63

Category

20th Century Art Deco More Bracelets

Art Deco Platinum 8 Carat Sapphire 25 Carat Diamond Bracelet

Estate 14K White Gold .25 Carat Diamond Heart Pendant Necklace

Located in Webster, SD

/8ths of an inch, not including the bail. It features .25 ctw in 22 round cut, natural diamonds. These

Category

21st Century and Contemporary Unknown Modern Pendant Necklaces

Materials

Diamond, White Gold

Estate 14K White Gold .25 Carat Diamond Heart Pendant Necklace

H 0.63 in W 0.63 in L 18 in

David Webb 1960's Impressive 25 Carat Diamond Cluster Brooch

By David Webb

Located in New York, NY

This is an impressive David Webb cluster diamond brooch crafted in 1960's set in platinum. All

Category

20th Century American Modern Brooches

Materials

Diamond, Platinum

David Webb 1960's Impressive 25 Carat Diamond Cluster Brooch

David Webb Platinum & 18K Yellow Gold 25 carat Diamond Collar Necklace

By David Webb

Located in New York, NY

carat weight of 25.00cttw. The necklace features three diamond panels, at the center each highlighting

Category

20th Century American Modern Choker Necklaces

Materials

Diamond, Emerald, 18k Gold, Yellow Gold, Platinum

David Webb Platinum & 18K Yellow Gold 25 carat Diamond Collar Necklace

18 Karat Gold 8.00 Carat Tsavorite and .25 Carat Diamond Leaf Brooch

By Cellini

Located in New York, NY

measures 3.50" x .50". 147 Tsavorites = 8.00 carats 25 Diamonds = 0.25 carats Stamped CELLINI 750

Category

Early 2000s German Modern Brooches

Materials

Diamond, Tsavorite, 18k Gold, White Gold

18 Karat Gold 8.00 Carat Tsavorite and .25 Carat Diamond Leaf Brooch

W 0.5 in L 3.5 in

10K Two-Tone Gold 1/25 Carat Diamond Accent Cross Pendant Necklace

Located in New York, NY

With a swirl of sparkling diamonds at the center, this graceful yellow gold cross pendant is a

Category

21st Century and Contemporary Indian Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Gold, 10k Gold, White Gold, Yellow Gold

10K Two-Tone Gold 1/25 Carat Diamond Accent Cross Pendant Necklace

H 0.12 in W 0.48 in L 0.79 in

10K Two-Tone Gold 1/25 Carat Diamond Accent Cross Pendant Necklace

Located in New York, NY

With a swirl of sparkling diamonds at the center, this graceful yellow gold cross pendant is a

Category

21st Century and Contemporary Indian Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Gold, 10k Gold, White Gold, Yellow Gold

10K Two-Tone Gold 1/25 Carat Diamond Accent Cross Pendant Necklace

H 0.12 in W 0.48 in L 0.79 in

Rose Gold Plated Sterling Silver 1/25 Carat Diamond Accent Dangle Earrings

Located in New York, NY

encrusted with shimmering round cut diamonds. All the diamonds are arranged in a prong setting to add extra

Category

21st Century and Contemporary Indian Contemporary Dangle Earrings

Materials

Diamond, White Diamond, 10k Gold, Gold Plate, Rose Gold, Sterling Silver

Rose Gold Plated Sterling Silver 1/25 Carat Diamond Accent Dangle Earrings

H 0.79 in W 0.32 in L 0.79 in

Retro Gold Kangaroo Pendant Natural 25 Carat Diamond and Amethyst, circa 1960

Located in Los Angeles, CA

Retro 14k Yellow Gold Kangaroo Pendant set with Natural 0.12 carat pear shaped diamond (4x3.5mm

Category

Vintage 1960s Unknown Retro Pendant Necklaces

Materials

Amethyst, Diamond, Gold, 14k Gold

Retro Gold Kangaroo Pendant Natural 25 Carat Diamond and Amethyst, circa 1960

18 Karat Yellow Gold Ring with Green Tourmaline and .25 Carat Diamonds

Located in New York, NY

Cabochon oval green tourmaline center stone with diamond accents set in 18 kt yellow gold. Diamond

Category

1990s Retro Solitaire Rings

Materials

Diamond, Tourmaline, Yellow Gold

18 Karat Yellow Gold Ring with Green Tourmaline and .25 Carat Diamonds

18K YG 4 Carat Amethyst & .25 Carat Diamond Ring Size 7.25 w Appraisal

Located in Eagan, MN

12.0 x 8.70 x 7.20 mm. It is 4 carats and the clarity is very good and the color is correct. It is

Category

2010s Unknown Art Nouveau Cocktail Rings

Materials

Diamond, Amethyst, 18k Gold, Yellow Gold

18K YG 4 Carat Amethyst & .25 Carat Diamond Ring Size 7.25 w Appraisal

25 Carat Diamond Round-Brilliant Cut Necklace in 18K White Gold GIA Certified

By Gad & Co.

Located in Miami, FL

Diamonds - Carat Sizes: Ranging from 1.17 Carats to 0.30 Carats - Total Weight: 21.64 Carats - Cut: Round

Category

21st Century and Contemporary Contemporary Drop Necklaces

Materials

Diamond, White Diamond, Gold, 18k Gold, White Gold

25 Carat Diamond Round-Brilliant Cut Necklace in 18K White Gold GIA Certified

18 Karat .25 Carat Diamonds Matrix Quartz Rough Slice Leaf Earrings Omega 3D

Located in New York, NY

Natural Matrix Raw Sliced quartz & Diamond Leaf Earrings. Diamonds Total Weight: .25ct. Rounds

Category

21st Century and Contemporary American Clip-on Earrings

Materials

Diamond, 18k Gold, Yellow Gold

18 Karat .25 Carat Diamonds Matrix Quartz Rough Slice Leaf Earrings Omega 3D

W 1.27 in L 0.8 in

2 Micron 14K Rose Gold Plated Sterling Silver 1/25 Carat Diamond Stud Earrings

Located in New York, NY

shape, the pair of earrings is lavishly enriched with pave set round cut diamonds. Defining true

Category

21st Century and Contemporary Indian Contemporary Stud Earrings

Materials

Diamond, White Diamond, Gold Plate, Rose Gold, Sterling Silver, 14k Gold

2 Micron 14K Rose Gold Plated Sterling Silver 1/25 Carat Diamond Stud Earrings

H 0.4 in W 0.4 in L 0.4 in

Black Onyx and Diamond Halo Men's Band 14K Yellow Gold .25 Carat Diamond Ring

By Five Star Jewelry

Located in Austin, TX

great gift to yourself! Metal Quality: 14K Yellow Gold Diamonds: Round Brilliant Diamond Weight: .25

Category

21st Century and Contemporary Unknown Modern Signet Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Black Onyx and Diamond Halo Men's Band 14K Yellow Gold .25 Carat Diamond Ring

25 Carat Riviera Tennis Necklace Excellent Cut

By Antinori Fine Jewels

Located in Chicago, IL

A 25 carat diamond in platinum Riviera necklace comprised of articulating links four-prong set with

Category

2010s Unknown Contemporary Choker Necklaces

Materials

Diamond, White Diamond, 18k Gold

25 Carat Riviera Tennis Necklace Excellent Cut

40 Carat Emerald Cut Diamond Platinum Necklace

By Antinori Fine Jewels

Located in Chicago, IL

. vivid green emeralds weighing a total of 25 carats Diamonds weighing a total of approximately 15 carats

Category

2010s Italian Contemporary Choker Necklaces

Materials

Diamond, White Diamond, Emerald, Platinum

40 Carat Emerald Cut Diamond Platinum Necklace

Lovely Pearl and Diamond Earrings

Located in New York, NY

fittings and large 10mm creamy white cultured pearls and .25 carat diamonds under each pearl. .50 carat

Category

Vintage 1950s American Brooches

Materials

Diamond, Pearl, 14k Gold

Lovely Pearl and Diamond Earrings

H 0.06 in W 0.04 in

Remarkable 1940s French Art Deco platinum and diamond bracelet

Located in London, GB

25 carat diamonds. It is a true work of art and a beautiful example of Art Deco jewellery. It would

Category

Vintage 1940s French Art Deco Link Bracelets

Materials

Diamond, Platinum

Remarkable 1940s French Art Deco platinum and diamond bracelet

W 0.75 in L 7.29 in

Anniversary Ring Natural Fancy Vivid Deep Yellow Diamond Band .25ct 14K

Located in Dearborn, MI

100% Natural Diamonds .25 Carat Diamond Weight Brand New ***313***846***3700 Customer Care Your

Category

2010s Wedding Rings

Materials

Yellow Diamond, 14k Gold, White Gold

Anniversary Ring Natural Fancy Vivid Deep Yellow Diamond Band .25ct 14K

Mens Diamond Ring 14K Gold Geometric Vintage

By Estate Jewelry

Located in East Brunswick, NJ

diamond in the center. The bezel set .25 carat diamond is estimated to be SI2 clarity and H color. The top

Category

20th Century Band Rings

Materials

Diamond, 14k Gold, Yellow Gold

Mens Diamond Ring 14K Gold Geometric Vintage

Retro Ruby & Diamond Two Tone Earrings

Located in New York, NY

: approximately .25 carats Diamond Weight: approximately .35 carats Back Type: clip on with post Gram Weight

Category

Vintage 1940s Unknown Retro Clip-on Earrings

Materials

Diamond, Ruby, 14k Gold, Rose Gold, Yellow Gold

Retro Ruby & Diamond Two Tone Earrings

L 1.1 in

Channel Set Diamond Wedding Band .25ct Mined Round Brilliant Platinum Anniversar

Located in Dearborn, MI

Bands With Platinum 100% Natural Diamonds .25 Carat Diamond Weight Excellent Condition ***800

Category

2010s Band Rings

Materials

Diamond, Platinum

Channel Set Diamond Wedding Band .25ct Mined Round Brilliant Platinum Anniversar

GIA Certified Natural Kunzite & Diamond 18K Yellow Gold Retro Cocktail Ring

Located in Baltimore, MD

carats Diamonds: Approx. 0.75 CTW F-G VS round natural diamonds Weight: 12.94 grams Height: 11mm Size

Category

Mid-20th Century North American Retro Cocktail Rings

Materials

Diamond, Kunzite, 18k Gold, Yellow Gold

GIA Certified Natural Kunzite & Diamond 18K Yellow Gold Retro Cocktail Ring

Brand New Diamond Wedding Ring Anniversary Band .25ct Mined 14K Rose Gold

Located in Dearborn, MI

Diamonds .25 Carat Diamond Weight Brand New ***800***322***8700 Customer Care Your New Ring Will Arrive

Category

2010s Band Rings

Materials

Diamond, 14k Gold, Rose Gold

Brand New Diamond Wedding Ring Anniversary Band .25ct Mined 14K Rose Gold

Piaget White Gold Half Hoop Earrings with Diamonds

By Piaget

Located in Darnestown, MD

Piaget white gold 18 karat half hoop earrings with a .25 carat diamond in the middle of each. The

Category

1990s Contemporary Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Piaget White Gold Half Hoop Earrings with Diamonds

W 38 in L 0.88 in

14K White Gold Diamond Rainbow Ring, Size 4

Located in Miami Beach, FL

sparkling .25 carat diamonds. This piece will light up your hand and provide beauty and good luck. Rainbows

Category

21st Century and Contemporary American More Rings

Materials

White Gold

14K White Gold Diamond Rainbow Ring, Size 4

14K Rose Gold Diamond Rainbow Ring, Size 4

Located in Miami Beach, FL

sparkling .25 carat diamonds. This piece will light up your hand and provide beauty and good luck. Rainbows

Category

21st Century and Contemporary American More Rings

Materials

Rose Gold

14K Rose Gold Diamond Rainbow Ring, Size 4

1/4 Carat Diamond Baguette Ring Band 14 Karat White Gold Wedding Stackable Band

By Five Star Jewelry

Located in Austin, TX

: 14k White Gold Diamond Carat Weight: .25 Carats Diamond Shape: Baguette Diamond Clarity: VS2

Category

2010s American Modern Band Rings

Materials

Diamond, 14k Gold, White Gold

1/4 Carat Diamond Baguette Ring Band 14 Karat White Gold Wedding Stackable Band

18kt White Gold Ring, 9ct Black and White Diamonds and 25ct Amethyst

Located in Antwerp, BE

22.4 mm, 25 carat Diamond: White brilliant cut diamonds ( together ca. 2 carat ), black diamonds

Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Amethyst, White Diamond, Black Diamond, White Gold

18kt White Gold Ring, 9ct Black and White Diamonds and 25ct Amethyst

14K Yellow Gold Diamond Double Rainbow Ring, Size 4

Located in Miami Beach, FL

double stone order with two sparkling .25 carat diamonds. This piece will light up your hand and provide

Category

21st Century and Contemporary American More Rings

Materials

Yellow Gold

14K Yellow Gold Diamond Double Rainbow Ring, Size 4

Ruby Diamond Navette Ring, 14K Yellow Gold, Ring Size 6.5, Diamond Statement

Located in McLeansville, NC

Stones: - ruby, 1 stone - round cut - 3.5 mm - approximately .25 carat - diamonds, 2 stones

Category

Antique Early 1900s Fashion Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Ruby Diamond Navette Ring, 14K Yellow Gold, Ring Size 6.5, Diamond Statement

Diamond Amethyst Ring, Yellow Gold, Estate Ring With Genuine 6.0 Carat Amethyst

By Five Star Jewelry

Located in Austin, TX

Quality: 14 karat Yellow Gold Diamond Number: 8 Diamond Total Weight: .25 carats Diamond Shape: round

Category

2010s American Contemporary Three-Stone Rings

Materials

Amethyst, Diamond, Yellow Gold, 14k Gold

Diamond Amethyst Ring, Yellow Gold, Estate Ring With Genuine 6.0 Carat Amethyst

Art Deco Diamond Sapphire Ring .25ct RBC French Cut Original 1930's Platinum

Located in Dearborn, MI

Custom Cut Sapphires Engraved Detail Perfect Engagement Ring 100% Natural Mined Diamond .25 Carat

Category

Vintage 1930s Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Diamond Sapphire Ring .25ct RBC French Cut Original 1930's Platinum

14K White Gold with 4 Carat Diamond Heart Eternity Ring, Size 4

Located in Miami Beach, FL

This ring is all heart. This eternity ring is composed of sixteen .25 carat diamonds set in our

Category

21st Century and Contemporary American Engagement Rings

Materials

White Gold

14K White Gold with 4 Carat Diamond Heart Eternity Ring, Size 4

Diamond Earrings Flower Vintage 14K White Gold Dangle 1.66 TDW

By Estate Jewelry

Located in East Brunswick, NJ

crafted in solid 14K White Gold and set with natural diamonds. The buttercup setting on the top holds .25

Category

Mid-20th Century Drop Earrings

Materials

Diamond, 14k Gold, White Gold

Diamond Earrings Flower Vintage 14K White Gold Dangle 1.66 TDW

Diamond Band Ring, 14 Karat White Gold Wedding Band, Zig Zag Diamond Band

By Five Star Jewelry

Located in Austin, TX

beautiful ring are listed below: Metal Quality: 14k White Gold Diamond Carat Weight: .25 Carats Diamond

Category

2010s American Modern Band Rings

Materials

Diamond, White Gold, 14k Gold

Diamond Band Ring, 14 Karat White Gold Wedding Band, Zig Zag Diamond Band

Art Deco Diamond Engagement Ring Old European .25ct 18K Belais Original 1920s

By Belais Brothers

Located in Dearborn, MI

Etched to Perfection 100% Natural Diamond .25 Carat Diamond Weight 18K White Gold Excellent

Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Art Deco Diamond Engagement Ring Old European .25ct 18K Belais Original 1920s

Diamond Band Ring, 14 Karat White Gold Wedding Band, Zig Zag Diamond Band

By Five Star Jewelry

Located in Austin, TX

beautiful ring are listed below: Metal Quality: 14k White Gold Diamond Carat Weight: .25 Carats Diamond

Category

2010s American Modern Band Rings

Materials

Diamond, 14k Gold, White Gold

Diamond Band Ring, 14 Karat White Gold Wedding Band, Zig Zag Diamond Band

Multi-Colored Sapphire and Diamond Lariat Necklace

Located in Houston, TX

vibrant hues, including pink, green, yellow, and blue, totaling over 25 carats. Diamond accents add a

Category

21st Century and Contemporary Contemporary Drop Necklaces

Materials

Diamond, Sapphire, 18k Gold

Multi-Colored Sapphire and Diamond Lariat Necklace

Get Updated with New Arrivals

Save "25 Carat Diamond", and we’ll notify you when there are new listings in this category.

25 Carat Diamond For Sale on 1stDibs

You are likely to find exactly the 25 carat diamond you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 14k Gold and White Gold, this item was constructed with great care. You can easily find a 885 antique edition and 1665 modern creations to choose from as well. If you’re looking for a 25 carat diamond from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. For this particular piece, .5 Carat and 1 Carat are consistently popular carat weights. Finding an appealing 25 carat diamond — no matter the origin — is easy, but LB Exclusive, TJD and Tiffany & Co. each produced a popular version that is worth a look. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes oval cut and old european cut alternatives. If you’re browsing our inventory for a 25 carat diamond, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 25 Carat Diamond?

Prices for a 25 carat diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $165 and can go as high as $3,350,000, while this accessory, on average, fetches $2,996.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings.

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.

Questions About 25 Carat Diamond

What is the value of a 25 carat diamond?
1 Answer
1stDibs ExpertSeptember 28, 2021
The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.
What is a 24-carat diamond?
1 Answer
1stDibs ExpertMarch 22, 2022
A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.
Is there a three-carat diamond?
1 Answer
1stDibs ExpertApril 5, 2022
Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.
How large is a 3-carat diamond?
1 Answer
1stDibs ExpertFebruary 27, 2024
In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
How big is a 12 carat diamond?
1 Answer
1stDibs ExpertFebruary 22, 2021
The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.
What is a 7 carat diamond worth?
1 Answer
1stDibs ExpertAugust 17, 2021
A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.
What is a 9 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.
What is a 3 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
What is 1 carat diamond worth?
1 Answer
1stDibs ExpertFebruary 22, 2021
Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.
How many carats should a diamond necklace be?
1 Answer
1stDibs ExpertNovember 6, 2023
There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.
How rare is a nine-carat diamond?
1 Answer
1stDibs ExpertApril 5, 2022
A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.
What is an 8 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.
What is a 4 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.
What is a 6 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.
What is a 5 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.
Is a 1.5-carat diamond too big?
1 Answer
1stDibs ExpertFebruary 27, 2024
Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.
Is a two-carat diamond rare?
1 Answer
1stDibs ExpertFebruary 13, 2023
Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.
Are half-carat diamond studs too small?
1 Answer
1stDibs ExpertNovember 27, 2023
Whether half-carat diamond studs are too small is a matter of personal opinion. A pair of diamond studs with a total carat weight of 0.5 usually consists of two 0.25-carat earrings. Many jewelry makers offer studs as small as 0.13 carats, so many people consider half-carat diamond studs to be medium-sized. On 1stDibs, shop a collection of antique and vintage diamond stud earrings.
Are 2 carat diamond studs too big?
1 Answer
1stDibs ExpertNovember 1, 2023
Whether two-carat diamond studs are too big is a matter of personal preference. At this size, each earring will be one carat. If you opt for the classic round brilliant cut, the studs will typically measure around 6.5 millimeters in diameter, which is a little more than half the size of a dime. Find a wide range of diamond stud earrings on 1stDibs.
Are 1.3-carat diamond earrings too small?
1 Answer
1stDibs ExpertNovember 8, 2023
Whether 1.3-carat diamond earrings are too small is a matter of personal opinion. A pair of earrings with a total carat weight of 1.3 is considered to be medium-sized. The smallest diamond earrings are around 0.25 carats, while the largest are 1.5 carats or more. Explore a wide range of diamond earrings on 1stDibs.