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Repossi 18 Kt Yellow Gold Ring 10 Carats Sapphire and Diamonds Hearts
By Repossi
Located in Paris, FR
REPOSSI 18 kt yellow gold gadrooned ring set with a large cabochon sapphire of over 10 carats
Category

Vintage 1980s Italian Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

10 Carat Vivid Blue Sapphire and Diamond Ring
By Diamond Scene New York
Located in New York, NY
A STUNNING ring! Certified, 10.02 carat Ceylon Vivid Blue oval sapphire. Set in a custom
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

2.6 Carat Marquise Sapphire and 0.72 Carat Round Natural Diamond Pendant ref2341
By Diamond Town
Located in New York, NY
halo, you'll find a striking arrangement of 10 marquise-cut blue sapphires, elegantly alternating with
Category

21st Century and Contemporary Contemporary Pendant Necklaces

Materials

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

10 carat Blue Sapphire & Diamond Ring
Located in London, GB
A beautiful Platinum, Sapphire and Diamond Cocktail / Engagement Ring. Featuring a 10 carat
Category

2010s Sri Lankan Modern Cocktail Rings

Materials

Blue Sapphire, Sapphire, Diamond, Platinum

Tahitian Pearl Sapphire and Diamond Earrings 3.87 Carats 18 Karat
By Harbor Diamonds
Located in New York, NY
18K Yellow Gold earrings featuring two Tahitian pearls measuring 10-11 mm flanked with diamonds
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Pearl, Blue Sapphire, Tsavorite, 18k Gold

GIA Certified 2.60 Carat Cushion Cut Blue Sapphire and Diamond Halo Ring ref471
By Diamond Town
Located in New York, NY
weight of 0.82 carats, comprising 10 round natural diamonds totaling 0.57 carats and 2 baguette natural
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Diamond Pink Sapphire Floral Freshwater Pearl Drop Earrings 1.10 CTTW 10-11 MM
By Harbor Diamonds
Located in New York, NY
14 Karat White Gold drop earrings featuring two Pink Sapphires weighing 0.40 Carats surrounded by
Category

2010s Contemporary Drop Earrings

Materials

Diamond, Freshwater Pearl, Pink Sapphire, 14k Gold, White Gold

2.51 Carat Oval Blue Sapphire Round Diamond Hasbani 18Kt Halo Engagement Ring
By Hasbani Diamonds
Located in London, GB
: 1.50 Carat Diamond 1.00 Carat (total weight 10 stones) Band Width: 2 mm Head Width: 13x15mm British
Category

2010s British Modern Engagement Rings

Materials

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

Vivid Diamonds GIA Certified 3.82 Carat Pinkish Purple Sapphire Cocktail Ring
By Vivid Diamonds
Located in Miami, FL
oval Sapphire with a Thai provenance, weighing 3.82 carats, surrounded by 10 round brilliant cut
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

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

18 Karat White Gold Multi Sapphire Freshwater Diamond Drop Earrings 1.32 Carats
By Harbor Diamonds
Located in New York, NY
Sapphires weighing 1.20 Carats and round brilliants weighing 0.12 Carats. Color G-H Clarity SI Pearls can
Category

2010s Contemporary Drop Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

10 Carat Sapphire Diamond 14K White Gold Mens Ring
Located in Westport, CT
An original 14K white gold sapphire and diamond ring. Mounted with one magnificent oval-circular
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold

10 Carat Sapphire Old Mine Diamond Bracelet Natural Red Blue Star Sapphires
Located in New York, NY
and are each approximately 1.3 Carats for a total Sapphire weight of approximately 10 Carats. Between
Category

20th Century Unknown Contemporary Bangles

Materials

Sapphire, Diamond, Star Sapphire, Silver

10K White Gold Blue Sapphire and 1/10 Carat Diamond Huggy Hoop Earrings
Located in New York, NY
enhancement, measure 4 x 3 MM and are expertly set in a 3-prong setting. With a diamond total weight of 1/10
Category

21st Century and Contemporary Indian Modern Hoop Earrings

Materials

Diamond, White Diamond, Blue Sapphire, 10k Gold, White Gold

10k White Gold Oval Sapphire Gemstone and 1/10 Carat Diamond "x" Link Bracelet
Located in New York, NY
prong set amidst 22 natural round diamonds totaling 1/10 cttw. The H-I color and SI1-SI2 clarity of the
Category

21st Century and Contemporary Indian Modern Link Bracelets

Materials

Diamond, White Diamond, Sapphire, White Gold, 10k Gold

10 Carat Natural Blue Sapphire 2.50 Carat Diamonds Bracelet 14 Karat
Located in New York, NY
Gem Line Bracelet 10.00ct Classic Natural color sapphire diamonds tennis bracelet. Very High
Category

2010s American Tennis Bracelets

Materials

Diamond, Sapphire, 14k Gold, White Gold

Sapphire And Diamond Cluster Ring 5 carat Sapphire & 2.35 Carat Diamonds
Located in London, GB
Princess Dianna. Sapphire : 5.00 carat Diamonds approx: 2.35 Carats Number of Diamonds :10 and each 0.23
Category

21st Century and Contemporary British Engagement Rings

Materials

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

18 Karat White Gold Diamond and a 10 Carat Purple Star Sapphire
Located in West Palm Beach, FL
An elegant, 18kt white gold ring with a beautiful 10ct purple star sapphire. In, a beautiful
Category

20th Century Unknown Fashion Rings

Materials

Diamond, Star Sapphire, 18k Gold, White Gold

10K Yellow Gold Pear Blue Sapphire and 1/10 Carat Diamond Huggy Hoop Earring
Located in New York, NY
Indulge in the captivating allure of these 10K Yellow Gold Pear Blue Sapphire and Diamond Drop and
Category

21st Century and Contemporary Indian Modern Hoop Earrings

Materials

Diamond, White Diamond, Blue Sapphire, 10k Gold, Yellow Gold

Art Deco 30 Carat Sapphires 10 Carat Diamonds Platinum Tennis Bracelet, 1920
Located in Herzelia, Tel Aviv
Art Deco 30 Carat Sapphires 10 Carat Diamonds Platinum Tennis Bracelet, 1920 30Ct of Sapphires and
Category

Early 20th Century Art Deco Tennis Bracelets

Materials

Diamond, Sapphire, Platinum

Mid Century 10 Carat Sapphire Diamond 14K White Gold Bracelet
Located in Beverly Hills, CA
Center Stone: 19 Round Brilliant Cut Blue Sapphires Weight: Approximately 10 Carats Accent Stone
Category

Vintage 1950s Link Bracelets

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

Mid Century 10 Carat Sapphire Diamond 14K White Gold Bracelet
Located in Beverly Hills, CA
Center Stone: 19 Round Brilliant Cut Blue Sapphires Weight: Approximately 10 Carats Accent Stone
Category

Vintage 1950s Link Bracelets

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

10 Carat Purple Star Sapphire and Diamond Pave in 18k Yellow Gold Handmade Ring
By Sarosi By Timeless Gems
Located in Los Angeles, CA
yellow gold, the ring was custom-designed to showcase this beautiful 10.14 carat purple star sapphire
Category

21st Century and Contemporary Artisan Dome Rings

Materials

Purple Sapphire, Sapphire, Star Sapphire, Diamond, 18k Gold, Gold, Yello...

1.20 Carat Round Diamond and Sapphire Ring
By Armadani
Located in Greenville, DE
(10) sapphire baguettes going down the side weighing approximately 1.17cttw and (28) brilliant round
Category

21st Century and Contemporary Contemporary Bridal Rings

Materials

Diamond, Sapphire, 18k Gold

GRS Certified 10 Carat No Heat Blue Sapphire Ring
By Antinori Fine Jewels
Located in Chicago, IL
Sapphire from Sri Lanka. Weighing an impressive 10.17 carats, this sapphire exhibits a striking blue hue
Category

2010s Unknown Engagement Rings

Materials

Blue Sapphire, Sapphire, White Diamond, Diamond, Platinum, 18k Gold

GRS Certified 10 Carat Untreated Pinkish Orange Padparadscha Sapphire Ring
Located in Chicago, IL
GRS Certified 10 Carat Untreated Padparadscha Sapphire & Diamond Ring Experience the rare beauty of
Category

2010s American Engagement Rings

Materials

Diamond, Sapphire, Padparadscha Sapphire , Platinum, Rose Gold

Spectra Fine Jewelry SSEF Certified 10 Carat Burma Sapphire Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
seamlessly blends timeless beauty with contemporary allure. Gracing the centerpiece is a mesmerizing 10-carat
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

10 Carat Blue Sapphire & Diamond Dangle Drop Ear Climb Chandelier Earrings
Located in Miami, FL
Natural 10 Carat total Blue Sapphire & Diamond Dangle Drop Chandelier Earrings with Diamond Ear
Category

21st Century and Contemporary North American Modern Dangle Earrings

Materials

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

GRS Certified 10 Carat NO HEAT BURMA Blue Sapphire Cushion Cut Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
An exquisite unheated and untreated blue sapphire with origin BURMA that is extremely rare and
Category

2010s Italian Modern Engagement Rings

Materials

Blue Sapphire, White Diamond, Diamond, Platinum

10 Karat Yellow Gold Sapphire and Diamond Ring Size 4.25 #15792
Located in Washington Depot, CT
Vintage 10 Karat Yellow Gold Sapphire and Diamond Ring Size 4.25- This elegant ring features one
Category

20th Century Engagement Rings

Materials

Diamond, Blue Sapphire, 10k Gold, Yellow Gold

3.81 Carat Purple Sapphire and 2.28 Carat Diamond Cocktail Cluster Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 3.81 carat Madagascar purple sapphire and 2.28 carat diamond, 18
Category

Vintage 1960s French Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

1.29 Carat Natural Sapphire and Diamond White Gold Band
By Roshe Jewels
Located in Los Angeles, CA
1.29 Carat Natural Sapphire and Diamond White Gold Band There are 6 Multi Colored Sapphires that
Category

21st Century and Contemporary American Contemporary Band Rings

Materials

Blue Sapphire, Pink Sapphire, Sapphire, Diamond, White Gold, 14k Gold, Gold

1.36 Carat Natural Sapphire and Diamond Yellow Gold Band
By Roshe Jewels
Located in Los Angeles, CA
1.36 Carat Natural Sapphire and Diamond Yellow Gold Band There are 6 Multi Colored Sapphires that
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Sapphire, Yellow Sapphire, Pink Sapphire, Gold, 14k Gold, Yello...

Amethyst Sapphire Pink Freshwater Pearl Earrings 3.13 Carats 18K Rose Gold
By Harbor Diamonds
Located in New York, NY
18K Rose gold drop earrings featuring 10 Amethysts, 2.84 carats, Pink Sapphires, 0.08 carats and
Category

2010s American Contemporary Drop Earrings

Materials

Amethyst, Freshwater Pearl, Pink Sapphire, Sapphire, Rose Gold

Moiseikin 18 Karat Gold Diamond 10 Carat Green Tourmaline Sapphire Cocktail Ring
By MOISEIKIN
Located in Hong Kong, HK
. Inside the designed flower petals ravished with diamonds and precious fancy sapphires is a flawless
Category

21st Century and Contemporary Russian Contemporary Fashion Rings

Materials

Pink Sapphire, Purple Sapphire, Chrome Tourmaline, Ruby, Blue Sapphire, ...

GIA Certified Blue Sapphire Cocktail Ring Diamond Setting 10 Carats 18K Gold
Located in Aliso Viejo, CA
Carat Cut: Oval 207 Round Pave Diamonds = 2.80 Carats Metal: 18K Yellow Gold Ring Size: 6.5 US *It can
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Sapphire, White Diamond, Diamond, Yellow Gold, 18k Gold, Gold

GIA Certified Blue Sapphire Cocktail Ring Diamond Setting 10 Carats 18K Gold
Located in Aliso Viejo, CA
Carat Cut: Oval 207 Round Pave Diamonds = 2.80 Carats Metal: 18K Yellow Gold Ring Size: 6.5 US *It can
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, White Diamond, Yellow Gold, 18k Gold, Gold

2.96 Carats Sapphire and Diamond White Gold Ring
By Shimon's Creations
Located in New York, NY
1 Sapphire Gemstone: 2.47 Carats, Oval Cut 2 White Diamonds: 0.30 Carat 10 White Diamonds: 0.19
Category

2010s Fashion Rings

Materials

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

1.12 Carat Oval Cut Sapphire and Diamond Platinum Cluster Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 1.12 carat sapphire and 0.48 carat diamond, platinum cocktail ring; part of
Category

Vintage 1930s Unknown Cluster Rings

Materials

Diamond, Sapphire, Platinum

18 carat yellow gold sapphires and diamonds ring
Located in Monte-Carlo, MC
baguette cut sapphires weighing 0.24 carats and 12 round brillant cut diamonds weighing 0.12 carats
Category

2010s Fashion Rings

Materials

Diamond, Sapphire, Yellow Gold

15 Carat Sapphire and Diamond Ring 13.50 ct Emerald Cut Sapphire 2 cttw Diamonds
By Five Star Jewelry
Located in Austin, TX
: Sapphire Gemstone Weight: 13.50 Carats Gemstone Color: Blue Measurements: 10 mm X 8 mm Band Width: 2.8
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Sapphire, Diamond, White Gold, 14k Gold

20.20 Carat Amethyst Sapphire and Diamond Yellow Gold Drop Earrings
By Roshe Jewels
Located in Los Angeles, CA
Diamonds that weigh 0.18 Carats (clarity: SI2, Color: F) and 10 Pink Sapphires that weigh 0.26 Carats. The
Category

21st Century and Contemporary American Contemporary Drop Earrings

Materials

Amethyst, Diamond, Sapphire, Pink Sapphire, 14k Gold, Yellow Gold

3.20 Carat Oval Sapphire and Diamond Cocktail Ring
Located in Miami, FL
sapphire weighing approximately 3.20 carats, 9 round brilliant cut diamonds weighing approximately 4.5
Category

1990s Unknown Modern Cocktail Rings

Materials

Diamond, Sapphire

1.47 Carats Diamond and Sapphire Earrings in Platinum
By Kiersten Elizabeth
Located in Southport, CT
delight with every wear, day to night. Light as a feather on the ear. Earring Details: Total Diamond (10
Category

21st Century and Contemporary American Modern Dangle Earrings

Materials

Diamond, Sapphire, Platinum

Edwardian Sapphire and Diamond Ring 18 Carat Gold
Located in Chipping Campden, GB
diamond. Ring Size: U or 10 1/4
Category

Vintage 1910s Unknown Edwardian More Rings

Materials

Diamond, Sapphire, 18k Gold

Antique 1 Carat Sapphire and 1.10 Carat Diamond Platinum Cluster Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1 carat sapphire and 1.10 carat diamond, platinum cluster
Category

20th Century Unknown Cluster Rings

Materials

Diamond, Sapphire, Platinum

Unheated Burmese Sapphire and Diamond Ring, 2.30 Carats
Located in Houston, TX
prized for. The sapphire weighs 2.30 carats and is surrounded by a halo of 10 dazzling old mine-cut
Category

Antique Mid-19th Century Engagement Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Sapphire and Diamond Cocktail Ring by Terrell & Zimmelman, circa 1970s
By Terrell and Zimmelman
Located in Wailea, HI
enhance the ring's allure, 12 marquise diamonds with a total weight of 0.87 carats and 10 tapered baguette
Category

Late 20th Century American Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

7.87 Carat Natural Amethyst Sapphire and Diamond Rose Gold Cocktail Ring
By Roshe Jewels
Located in Los Angeles, CA
7.87 Carat Natural Amethyst Sapphire and Diamond Rose Gold Cocktail Ring **This ring has our heart
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Green Sapphire, Pink Sapphire, Blue Sapphire, Sapphire, White Diamond, D...

9 Carat Yellow Sapphire Diamond Pendant
Located in Hong Kong, HK
Sapphire: 9 carats Diamonds: 1.12 carats Gold: 10 grams
Category

21st Century and Contemporary Hong Kong Late Victorian Pendant Necklaces

Materials

Diamond, Yellow Sapphire, Yellow Gold

Platinum 7.52 Carat Cushion Cut Blue Sapphire and Diamond Engagement Ring
Located in Miami, FL
the eye of any who come across it. The sapphire is accompanied by 10 tapered baguette-cut diamonds as
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

2.14 Carat Diamond Bespoke 18 Kt White Gold British Hallmark Cluster Cufflinks
By Hasbani Diamonds
Located in London, GB
Exceptional and individual set with round brilliant-cut diamonds, these bespoke Hasbani Diamonds
Category

2010s British Modern Cufflinks

Materials

Blue Sapphire, Tourmaline, Spinel, Green Sapphire, Yellow Sapphire, Pink...

2.96 Carats Sapphire and White Diamond White Gold Ring
By Shimon's Creations
Located in New York, NY
1 Sapphire Gemstone: 2.47 Carats 2 White Diamonds: 0.3 Carat 10 White Diamonds: 0.19 Carat Metal
Category

2010s Fashion Rings

Materials

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

10 Carat Tanzanite Cocktail Ring in 18K WG with Yellow Sapphires & Diamond Halo
Located in Manchester By The Sea, MA
. The ring is made from 18K White Gold and features a 10 carat Tanzanite center stone accented by
Category

21st Century and Contemporary American Artisan Cocktail Rings

Materials

Diamond, Yellow Sapphire, Tanzanite, 18k Gold

2.63 Carats Sapphire and White Diamond White Gold Ring
By Shimon's Creations
Located in New York, NY
1 Sapphire Gemstone: 2.16 Carats 2 White Diamonds: 0.28 Carat 10 White Diamonds: 0.19 Carat Metal
Category

2010s Fashion Rings

Materials

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

2.99 Carats Sapphire and White Diamond White Gold Ring
By Shimon's Creations
Located in New York, NY
1 Sapphire Gemstone: 2.45 Carats 2 White Diamonds: 0.36 Carat 10 White Diamonds: 0.18 Carat Metal
Category

2010s Fashion Rings

Materials

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

Emilio Jewelry Grs Certified 10 Carat No Heat Royal Blue Sapphire Ring
By Emilio!
Located in New York, NY
!  Featuring a spectacular sapphire certified as "Royal Blue" Aka Vivid Blue just over 10 carats. The sapphire
Category

21st Century and Contemporary Three-Stone Rings

Materials

Sapphire, Blue Sapphire

18 Karat Yellow Gold Sapphire Diamond Golden South Sea Pearl Earrings 5.02 Cttw
By Harbor Diamonds
Located in New York, NY
18 Karat Yellow Gold drop earrings featuring 8 Oval shape Sapphires weighing 4.68 Carats with 10
Category

2010s Contemporary Drop Earrings

Materials

Diamond, South Sea Pearl, Sapphire, 18k Gold, Yellow Gold

Roman Malakov 1.90 Carat Blue Sapphire and Diamond Pendant Necklace
By Roman Malakov
Located in New York, NY
, surrounded by 10 round brilliant diamonds that weighs 0.88 carats in total, F-G color, VS/SI clarity, and set
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

GRS Certified 10 Carat Natural Padparadscha Sapphire Ring in 18K Rose Gold
Located in Chicago, IL
A breathtaking GRS-certified 10-carat Natural Padparadscha Sapphire sits at the heart of this
Category

2010s American Contemporary Cocktail Rings

Materials

Sapphire, Padparadscha Sapphire , Rose Gold

Natural Bi Colour Australian Sapphire And Diamond 18k White Gold Round Pendant
By Gems and Jewels UK
Located in Birmingham, GB
Natural Bi Colour Australian Sapphire And Diamond 18k White Gold Pendant Necklace. 0.70 Carat
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Sapphire, Yellow Sapphire, Blue Sapphire, Gold, ...

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10 Carat Sapphire And Diamond For Sale on 1stDibs

Surely you’ll find the exact 10 carat sapphire and diamond you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using Gold, White Gold and 14k Gold. Find an antique version now, or shop for 69 vintage or 94 modern creation for a more contemporary example of these cherished accessories. Finding the perfect 10 carat sapphire and diamond may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. Creating a 10 carat sapphire and diamond has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Alberto and Emeralds Maravellous are consistently popular. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and cushion cut cut versions available here, too. There aren’t many items for men if you’re seeking a 10 carat sapphire and diamond, as most of the options available are for women and unisex.

How Much is a 10 Carat Sapphire And Diamond?

Prices for a 10 carat sapphire and diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $360 and can go as high as $1,825,000, while this accessory, on average, fetches $8,231.

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 ringsvintage engagement rings or Art Deco engagement rings

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