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.30 Carat Diamond Swirl Platinum Engagement Ring
Located in Stamford, CT
Diamond Swirl design Platinum engagement ring. .30ct full cut center stone with 19 Ideal full cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

.30 Carat Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
1940's designed sapphire diamond ring. 1 round .30cts round sapphire setting platinum with 18 sing
Category

Early 20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

.30 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 8.5 Metal Type: Platinum Weight: 2.3 grams Center Diamond Details Shape: Old European
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

Tiffany & Co .30 Carat Diamond Platinum Flower Ring
By Tiffany & Co.
Located in Stamford, CT
Tiffany & Co Enchanted garden diamond flower platinum ring. 26 round brilliant cut diamonds set in
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Platinum

.30 Carat Brown Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Bezel set natural brown and white diamond engagement ring. 1 brown bezel set diamond with two round
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Brown Diamond, Gold, 14k Gold, Yellow Gold

Peter Suchy .30 Carat Diamond Platinum Eternity Band Ring
By Peter Suchy
Located in Stamford, CT
Simple diamond wedding band ring. A different take on the traditional wedding band, this platinum
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

.30 Carat Diamond Art Deco Filigree Platinum Engagement Ring
Located in Stamford, CT
mine cut G-H SI2 diamond, Approx. .30 carats EGL # US 314581201D 8 Old single cut H-I-J Si2-I diamonds
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

.30 Carat Art Deco Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.8 grams Center Diamond
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Jabel EGL Certified .30 Carat Round Diamond Platinum Engagement Ring
By Jabel
Located in Stamford, CT
Vintage 1940-1950 Jabel Platinum diamond engagement ring. The brilliance of the .30 carat
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

Platinum Natural Diamond .30 Carat 6.5MM Band Ring
Located in Baltimore, MD
Platinum Natural Diamond Leaf Design 6.5mm Band Ring Metal: Platinum Weight: 7.75 grams Diamonds
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Platinum

Emerald Diamonds Cluster Ring 14 Karat .30 Carat
Located in New York, NY
carat natural round diamonds 14 karat yellow gold 2 grams Depth of ring 6 mm Size 6 and 1/4 we may
Category

2010s American Cluster Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

.30 Carat Art Deco Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 6.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.65 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.30 Carat Art Deco Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 3.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Certified 30 Carat Untreated Jadeite Jade & Diamond Platinum Ring
Located in Miami, FL
HKJ&S Certified Untreated 30 Carat Natural Cabochon Cut Jadeite Jade, Grade A, (Fei Cui) & Diamond
Category

21st Century and Contemporary Retro Cocktail Rings

Materials

Diamond, Jade, Platinum

Art Deco Solitaire Ring, Sapphire circa 6, 30 Carats, Diamonds and Platinum
Located in London, GB
) Sapphire that is approximatively 6,30 carats - Round diamonds, with an overall of circa 1 carat - Platinum
Category

Early 20th Century Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

.30 Carat Diamond Art Deco White Rose Gold Engagement Ring
Located in Stamford, CT
European H SI2 diamonds 4.4 x 2.3 mm Approximate .30 total carat weight 10 rose cut H-I SI2 diamonds 1.5
Category

Early 20th Century Band Rings

Materials

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

.30 Carat White Gold Diamond Band
Located in Lynchburg, VA
, and H in color. In total, this ring measures .30 carats and is a size 5. The band tapers from 10.3mm
Category

Late 20th Century Unknown Retro Band Rings

Materials

Diamond, 14k Gold, White Gold

GIA Certified .30 Carat Emerald Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Emerald and diamond engagement ring. GIA certified oval green emerald center stone in a 14k yellow
Category

21st Century and Contemporary Engagement Rings

Materials

Emerald, Diamond, Gold, Yellow Gold, 14k Gold

Peter Suchy .30 Carat Diamond Rose Gold Eternity Band Ring
By Peter Suchy
Located in Stamford, CT
Peter Suchy diamond Eternity 18k rose gold wedding band. Custom made in Victorian Revival style
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

.30 Carat Round Brilliant Cut Diamond Halo White Gold Engagement Ring
Located in Stamford, CT
Bright and sparkly diamond engagement ring. Set with a .30ct round brilliant cut center diamond and
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold

18 Karat Gold Ring with Huge 24 Carat Emerald and 30 Diamonds
Located in Berlin, DE
30 diamonds of approx. 0.05 carat each. The emerald has a weight of approx. 24 carats and a size of
Category

Late 20th Century Modern More Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold

30 Carat Cabochon Blue Sapphire and Diamond Double Halo Cocktail Ring
Located in New York, NY
approx. 30.00 carats with certificate (attached) Diamonds weigh 3.00 carats total. Size 10 US (sizable
Category

Vintage 1980s American Cocktail Rings

Materials

Blue Sapphire, Diamond, White Gold, 18k Gold

30 Carat Cabochon Colombian Emerald & Diamond 18 Karat Yellow Gold Cocktail Ring
Located in New York, NY
A classic, Cocktail ring Large size Colombian cabochon approximately 30 Carat Emerald and Diamond
Category

Early 2000s Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

.30 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.5 grams Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.30 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 4 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.1 grams Center Stone Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

1950s 0, 30 Carat Diamond 18 Karat Yellow Gold Solitaire Ring
Located in Poitiers, FR
diamond in dahlia setting. On both sides, the start of the ring is a loop held by a small string. Weight
Category

Vintage 1950s French Retro Engagement Rings

Materials

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

30 Carat Pear Cut Opal and Diamond 14 Karat Gold Cocktail Ring, Estate
Located in New York, NY
Introducing a timeless cocktail ring featuring a stunning 30-carat pear-shaped opal and diamond
Category

2010s Cocktail Rings

Materials

Diamond, Opal, 14k Gold

AGL Certified 30 Carat No Heat Ceylon Blue Star Sapphire & Diamond Halo Ring
By Gad & Co.
Located in Miami, FL
Natural 30 Carat no Heat Ceylon Blue Star Sapphire & Diamond Ring In Platinum This unheated star
Category

21st Century and Contemporary North American Baroque Revival Cocktail Rings

Materials

Star Sapphire, Diamond, Platinum

14 Karat Rose Gold .30 Carat Natural Diamond Eternity Band Ring
Located in Baltimore, MD
14 Karat Rose Gold .30 Carat Natural Diamond Eternity Band Ring Metal: 14k rose gold Weight: 1.70
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Rose Gold

.30 Carat Art Deco Diamond 14 Karat White Gold Engagement Ring
Located in Hicksville, NY
Diamond Details: Weight: .30 carat Cut: Old European brilliant Color: J Clarity: SI1 Side Stone Details
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Diamond, White Gold

Diamond Flower Cluster Engagement Ring, .30 Carats in 14 Karat Rose Gold Lv
By Five Star Jewelry
Located in Austin, TX
original price of $2,650. The diamonds weigh a total of 0.30 carats. This ring is a size 6 and it can be
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

.30 Carat Total Weight Diamond Yellow Gold and Platinum Engagement Ring
Located in Hicksville, NY
grams Diamond Details: Weight: .30 carat, total weight Cut: Old European Brilliant Color: G Clarity: VS
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

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

Hidalgo .30 Carat Diamond White Gold Wedding Band
By Hidalgo
Located in Stamford, CT
Hildago 18k white gold wedding band with .30cts of brilliant cut diamonds 21 round brillinat cut
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Large 30 carat Natural Star Sapphire and Diamond Ballerina Ring in Platinum
Located in La Jolla, CA
Large 30 carat Natural Star Sapphire & Diamond Ballerina Ring in Platinum Star Sapphire and
Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Star Sapphire, Platinum

Romantic 30 Carat Cabochon Rose Quartz, Diamond, 14K Rose Gold Flower Ring
Located in New York, NY
Spectacular 30 carat fine translucent pink Rose Quartz and diamond rose gold Cocktail ring
Category

21st Century and Contemporary Romantic Cocktail Rings

Materials

Quartz, Diamond, 14k Gold, Rose Gold

Blue Ceylon Sapphire Ring 30 Carats GIA Diamond Cocktail Design by Ella Gafter
By Ella Gafter
Located in New York, NY
The blue Ceylon sapphire and diamond ring features a magnificent oval faceted 30 carat blue Ceylon
Category

21st Century and Contemporary Italian Artist Cocktail Rings

Materials

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

14 Karat Yellow Gold .30 Carat Old European Brilliant Diamond Engagement Ring
Located in Hicksville, NY
Year: 1943 Item Details: Ring Size: 7.5 Metal Type: 14K Yellow Gold [Hallmarked, and Tested] Weight
Category

Vintage 1940s Engagement Rings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

.30 Carat Total Weight Victorian Diamond 14 Karat Yellow Gold Engagement Ring
Located in Hicksville, NY
Ring Size: 5 Metal Type: 14K Yellow Gold [Hallmarked, and Tested] Weight: 3.6 grams Pearl: Natural
Category

Antique 1890s Unknown Victorian Engagement Rings

Materials

Diamond, Yellow Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Zircon, Blue Zircon, Gold, 14k Gold, White Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

Important Rare Natural Ocean Blue Zircon Ring Diamond Halo 30 Carats 14K Gold
Located in Aliso Viejo, CA
Carats Color: Ocean Blue, Cut: Oval Diamonds = 0.20 Carats Color: F, Clarity: VVS Metal: 14K White Gold
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Zircon, Zircon, White Diamond, Diamond, White Gold, 14k Gold, Gold

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30 Carat Diamond Ring For Sale on 1stDibs

You are likely to find exactly the 30 carat diamond ring you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 30 carat diamond ring 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. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 Carat and 1 Carat carat weights, specifically, are sought with frequency. Creating a 30 carat diamond ring has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Luigi Ferrara and Tiffany & Co. are consistently popular. 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 emerald cut alternatives. There aren’t many items for men if you’re seeking a 30 carat diamond ring, as most of the options available are for women and unisex.

How Much is a 30 Carat Diamond Ring?

Prices for a 30 carat diamond ring can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $253 and can go as high as $1,875,000, while this accessory, on average, fetches $3,594.

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.  

Finding the Right Rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About 30 Carat Diamond Ring
  • 1stDibs ExpertNovember 2, 2023
    There is no rule for how many carats a diamond wedding ring should be. You're free to choose a ring with a carat weight that appeals to you and fits your budget. The average carat weight for diamond wedding rings is 1 to 1.9 carats. Shop an assortment of diamond wedding rings on 1stDibs.
  • 1stDibs ExpertFebruary 1, 2024
    Elizabeth Taylor's famous diamond ring was 33.19 carats. Although many people believe the Krupp diamond ring was an engagement gift, Richard Burton actually bought the gorgeous Asscher-cut ring to mark their five-year anniversary. For their engagement, Burton presented Taylor with an 18.61-carat emerald and diamond pendant made by Bulgari. The pendant detached from its necklace and could double as a brooch. Explore a large selection of diamond rings on 1stDibs.