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Tiffany Co. Sapphire GIA Cert Diamond Platinum Bypass Ring
By Tiffany Co.
Located in Miami, FL
Tiffany & Co. platinum diamond and sapphire bypass ring featuring a GIA graded 1.78ct old European
Category

Antique 19th Century American More Rings

Materials

Blue Sapphire, Diamond, Platinum

Art Deco 1.35 Carat GIA Cert Diamond platinum Ring
Located in Miami, FL
1.35 Carat Old European Cut Diamond, E Color, VS1 Clarity, Accented by 6 Old European Cut Diamonds
Category

20th Century American Art Deco More Rings

Materials

Diamond, Platinum

Flawless 1.02 Carat GIA Cert Diamond Platinum Engagement Ring
Located in Litchfield, CT
carat diamond, this ring is beyond stunning. The meticulous fabrication features hand-engraved detail
Category

1990s American Engagement Rings

Materials

Diamond, 18k Gold, Platinum

3.60 Carats Cushion Cut GIA Cert Diamond Gold Earrings
Located in Miami, FL
18k White Gold Earrings Containing a 1.77ct and a 1.83ct K/VS2 GIA Cushion Cut Diamond.
Category

21st Century and Contemporary Modern Stud Earrings

Materials

Diamond, 18k Gold

13.67 Carats GIA Cert Diamonds Gold Platinum Eternity Band Ring
Located in Miami, FL
diamonds VVS2-VS2 clarity weighing 7.45cts total alternating 6 GIA graded radiant cut diamonds, I-J color
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Diamond, Yellow Diamond, Platinum

Light Pink Oval GIA Cert Diamond Gold Platinum Engagement Ring
Located in Miami, FL
The pink diamond is one of the rarest and most sought after hues of diamonds. Graceful in composite
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Pink Diamond, Gold, Platinum

Natalie K 2.01 Carat GIA Cert Diamond Platinum Wedding Set
By Natalie K
Located in Miami, FL
Platinum Natalie K wedding set featuring a GIA graded 2.01ct emerald cut diamond, F color, SI1
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

Stunning 2.32 Carat GIA Cert Diamond Gold Solitaire Stud Earrings
Located in Miami, FL
diamonds weighing 2.32cts total weight, L color, VVS2-VS2 clarity. These diamond stud earrings are
Category

21st Century and Contemporary American Stud Earrings

Materials

Diamond, White Diamond, 18k Gold

Cushion Shaped Halo Split Shank GIA Cert diamond Platinum Ring
By Manfredi
Located in Greenwich, CT
Diamond split shank engagement ring, centering a near-colorless round-cut diamond weighing 3.16
Category

2010s American Artist Engagement Rings

Materials

Diamond, White Diamond, Platinum

Natural Fancy Green Yellow GIA Cert Diamond Gold Engagement Ring
Located in Miami, FL
is centered with a GIA CERTIFIED 0.65-ct round cut diamond of natural fancy green yellow color
Category

Late 20th Century American Solitaire Rings

Materials

Diamond, White Diamond, Yellow Diamond, 14k Gold, Gold, White Gold, Yell...

3.80 Carat Natural Fancy Yellow GIA Cert Diamond Gold Ring
Located in Boca Raton, FL
Material: 14k Yellow Gold Serial Number: 10319960 Diamond Details: GIA Certified 3.80ct Natural
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

White Diamond, Yellow Diamond, 14k Gold, Yellow Gold

European-cut 4.48 Carat GIA Cert diamond Platinum Engagement Ring
Located in London, GB
A diamond ring, mounted in platinum, set with a 4.48ct I colour SI2 clarity old European-cut
Category

2010s British Engagement Rings

Materials

Diamond, Platinum

Bulgari 6.8 Carat GIA Cert Diamond Platinum Ballerina Engagement Ring
By Bulgari
Located in Feasterville, PA
An enchanting Bulgari "Ballerina" style diamond ring featuring a GIA Graded 2.80ct Vvs2 F Color
Category

Vintage 1970s Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. 3.32 Carat GIA Cert Diamond Gold Solitaire Ring
By Tiffany Co.
Located in Troy, MI
This classic Tiffany diamond solitaire ring is what every girl dreams about. 3.32 ct round
Category

21st Century and Contemporary American Solitaire Rings

Materials

Diamond, 18k Gold

1950s Retro 3.02 Carat GIA Cert Diamond Sapphire Platinum Ring
Located in London, GB
diamond in a tapering brushed platinum mount the shoulders set with further sapphires and diamonds
Category

Vintage 1950s Unknown Retro Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Sophia D. 2.02 Carat GIA Cert Diamond Platinum Engagement Ring
By Sophia D
Located in Beverly Hills, CA
with modern techniques. Featuring a GIA certified 2.02 carat round brilliant cut diamond that is F
Category

1990s American Modern Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.77 Carat GIA Cert Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
VS1 clarity center diamond. The diamond is accented by numerous near colorless diamonds. Ring
Category

Vintage 1930s American Art Deco Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Sapphire GIA Cert Diamond platinum 3-stone Ring
By Tiffany Co.
Located in San Francisco, CA
Tiffany & Co. 3-Stone Platinum ring features a GIA graded Round Brilliant Cut Diamond weighing 0.62
Category

21st Century and Contemporary American Bridal Rings

Materials

Blue Sapphire, Diamond, Platinum

4.19 Carat Royal Asscher Cut GIA Cert Diamond Platinum Ring
Located in Aspen, CO
The center diamond is a Royal Asscher Cut diamond weighing 4.19 cts. It is accompanied by a recent
Category

21st Century and Contemporary American Contemporary Wedding Rings

Materials

Diamond, Platinum

2.01 Carat GIA Cert Diamond Heart Emerald Gold Engagement Ring
Located in Miami, FL
Diamond ring exposes a GIA certified, 2.01ct heart brilliant cut diamond measuring 8.52 x 8.53 x 4.54mm
Category

Vintage 1980s Unknown Engagement Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Jona Crossover Fancy Yellow GIA Cert Diamond Gold Cocktail Ring
By Jona
Located in Torino, Piedmont
Magnificent Hand Crafted in Italy Crossover Natural Fancy Yellow Diamond Ring by Jona, Featuring
Category

2010s Italian Cocktail Rings

Materials

Yellow Diamond, 18k Gold

Bulgari 1.01 Carat GIA Cert Diamond gold Solitaire Engagement Ring
By Bulgari
Located in Southampton, PA
cut of 1.01ct diamond, the perfect punctuation to a gorgeous design. Complete with GIA certification
Category

Late 20th Century Italian Engagement Rings

Materials

White Diamond, 18k Gold, Yellow Gold

Harry Winston Colombian Emerald (Gubelin Cert) Diamond Yellow Gold Ring
By Harry Winston
Located in Beverly Hills, CA
emerald flanked by a pair of trillion cut diamonds (total weight 2.36 carats, J color, VS1 clarity
Category

Vintage 1960s American Three-Stone Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

8.88 Carat Fancy Yellow Radiant GIA Cert Diamond Gold Platinum Ring
By J. Birnbach
Located in New York, NY
This stunning ring features an 8.88 carat Fancy Yellow radiant-cut diamond with VVS2 clarity. This
Category

21st Century and Contemporary Three-Stone Rings

Materials

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

5.01 Carat Cushion GIA Cert Diamond and Platinum Pave Halo Ring
By J. Birnbach
Located in New York, NY
A beautiful 5.01 carat cushion-cut diamond with H color and I1 clarity is set in a modern yet
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

Gorgeous Art Deco 3.11 Carat GIA Cert Diamond Platinum Engagement Ring
Located in Miami, FL
This beautiful platinum deco engagement ring features a 3.11ct old European cut diamond, J color
Category

20th Century American Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 1.01 Carat GIA Cert Diamond Platinum Solitaire Engagement Ring
Located in Houston, TX
weight: 1.01 carats, color: I, clarity: SI2, with a GIA cert) and ten single-cut diamonds (total carat
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

1930s Art Deco .90 Carat GIA Cert Diamond Platinum Engagement Ring
Located in Litchfield, CT
Circa 1930s. This period Art Deco diamond engagement ring is set with a .90 carat diamond (L color
Category

Vintage 1930s Art Deco Engagement Rings

Materials

White Diamond, Platinum

1930s Art Deco .91 Carat GIA Cert Diamond Platinum Engagement Ring
Located in Litchfield, CT
platinum, and an additional .12 carats of diamonds (H color, SI1-2 clarity). This 1930s ring is in
Category

Vintage 1930s American Art Deco Engagement Rings

Materials

Diamond, Platinum

3.96-ct Burmese Ruby (Gubelin Lab Cert) Diamond Yellow Gold Ring
Located in Beverly Hills, CA
made of yellow gold and the ruby is surrounded with twelve finest round brilliant cut diamonds - total
Category

Vintage 1970s Unknown Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Natural Alexandrite 3.29 cts Sri Lanka Origin GIA Cert Diamond Necklace
Located in Beverly Hills, CA
Diamond Trillions Cuts on Each Side . Gia certified Report Number 110189930363 Oval Alexandrite 3.29 cts
Category

1990s Japanese Pendant Necklaces

Materials

Alexandrite, Diamond, Platinum

2.50 Carat Asscher Cut GIA Cert Diamond Platinum Three Stone Engagement Ring
By J. Birnbach
Located in New York, NY
, Asscher cut diamond center with 0.48ctw Asscher cut diamond sidestones. A true classic!
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

Round Brilliant Cut GIA Cert Diamonds High Polished Platinum Three Stone Ring
By H H Jewels
Located in Miami, FL
metal. Shown here, the ring is constellated in platinum with a 1.50 carat round brilliant cut diamond
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Platinum

Natural Sapphire GIA Certified Diamonds Gold Riviere Necklace 18 Karat Gold
Located in New York, NY
Natural Sapphire GIA Cert Diamonds Gold Riviere Necklace 18K White Gold Stunning riviere necklace
Category

2010s American Artisan Choker Necklaces

Materials

Blue Sapphire

8.05 Carats GIA Cert Fancy Color Diamond Platinum Flower Ring
By Vivid Diamonds
Located in Miami, FL
Platinum Ring Set with GIA Certified Natural Fancy Color and White Diamonds. 1.48ct Pear Shape
Category

21st Century and Contemporary American More Rings

Materials

Diamond, Pink Diamond, Yellow Diamond, 18k Gold, Platinum

3.52 Carat GIA Cert Fancy Yellow Diamond Platinum Three Stone Ring
By Vivid Diamonds
Located in Miami, FL
3.52ct GIA Certified Fancy Yellow Radiant Cut Diamond Flanked by 2 Trapezoid Diamonds .87cts, G
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

3.06 Carat GIA Cert Fancy Light Yellow Diamond Gold Platinum Ring
By Vivid Diamonds
Located in Miami, FL
Diamond, Accented by 2 Half Moon Cut Diamonds Weighing .81cts G Color, VS Clarity.
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

GIA Cert Emerald Cut Diamond Ring
Located in New York, NY
GIA 5.01 H VVS2 Emerald Cut Diamond Ring Beautifully cut 5.01 carat H color VVS2 clarity Emerald
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Cert Sapphire Diamond Gold Chandelier Necklace
Located in Bishop s Stortford, Hertfordshire
Sapphire 28.54cts - VS1 clarity, G-H colour diamonds - Total weight of Diamonds 7.18cts - Secure push
Category

2010s Drop Necklaces

Materials

Blue Sapphire, Diamond, 18k Gold, White Gold

Impressive GIA Cert Fancy Yellow Diamond Earclips
Located in New York, NY
Impressive GIA certified Fancy Yellow diamond clip on earrings Cut Cornered rectangular modified
Category

21st Century and Contemporary American Clip-on Earrings

Materials

Diamond, Platinum, 18k Gold

Natural GIA Cert Opal Diamond Platinum Ring
Located in Beverly Hills, CA
exquisite hand made art deco platinum ring that has been designed with clean, white diamonds. Size 5-3/4
Category

Vintage 1930s American Art Deco More Rings

Materials

Diamond, Opal, Platinum

Unheated GIA Cert Sapphire Diamond Gold Ring
Located in Boca Raton, FL
Luxurious 18 karat white gold sapphire and diamond ring features a no heat Madagascar Sapphire with
Category

21st Century and Contemporary Malagasy Modern Bridal Rings

Materials

Blue Sapphire, White Diamond, 18k Gold

GIA Cert Colombian Emerald Diamond Gold Pendant
By H H Jewels
Located in Miami, FL
immaculate pave set diamonds weighing .61 carats and graded F/G VS that envelop the majestic center gemstone
Category

21st Century and Contemporary American Drop Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

12.03 Carat GIA Cert Fancy Color Diamond Necklace
Located in Miami, FL
diamond accented by 56 round brilliant cit diamonds weighing .46cts G-H VS-SI. This diamond necklace is
Category

21st Century and Contemporary American Pendant Necklaces

Materials

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

4.07 Carat GIA Cert Radiant Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
cut diamond center stone with halfmoon diamond sidestones totaling 0.95cts and 12 graduating pave set
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

1.48 Carat GIA Cert Colored Diamond platinum Necklace
Located in Miami, FL
1.48 Carat GIA Graded Fancy Deep Brown Orange Diamond Surrounded by 32 Round Brilliant Cut Diamonds.
Category

21st Century and Contemporary American More Necklaces

Materials

Brown Diamond, Diamond, Platinum

6.05 Carat GIA Cert Radiant Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
clarity, radiant-cut diamond flanked by two shield-cut diamonds totaling 1.70 ctw. This sparkling beauty
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Cert Sapphire diamond platinum ring
By Hamilton
Located in Princeton, NJ
diamonds and millegrain details for a distinctive and heirloom impression. Handwrought in fine platinum
Category

2010s Cocktail Rings

Materials

Blue Sapphire, Platinum

8.51 Carat GIA Cert Emerald Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
, Emerald cut diamond with 0.82ctw step cut trapezoid diamond sidestones. With this ring on her finger she
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

7.02 Carat GIA Cert Oval Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
This lovely handmade platinum ring centers on a 7.02 ct., E color, SI1 clarity, oval-cut diamond
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

3.04 Carat GIA Cert Oval Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
cut diamond with 1.12ctw halfmoon diamond sidestones. This sparkling stunner belongs on your lovely
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

8.68 Carat GIA Cert “Crisscut” Diamond Platinum Ring
Located in Carmel-by-the-Sea, CA
“crosscut” square radiant diamond in the center and decorated with 1.10 carats of asscher cut diamonds on
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Cert Emerald-Cut Diamond Platinum Cocktail Ring
Located in New York, NY
A modern platinum and diamond ring. This ring centers on an emerald cut diamond that weighs 1.88
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

3.50 Carat GIA Cert Ruby Diamond Gold Ring
Located in Miami, FL
brilliant, oval and baguette cut diamonds, F color, VS clarity. The ruby is accompanied by a GIA report
Category

21st Century and Contemporary American More Rings

Materials

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

GIA Cert 13.57 Carat Topaz Diamond Platinum Pendant
Located in Miami, FL
cut diamonds set in an ornate design.
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Topaz, Platinum

10.11 Carat GIA Cert D Internally Flawless Diamond
By J. Birnbach
Located in New York, NY
This magnificent loose diamond weighs in at 10.11cts. It is a GIA certified, D color, Internally
Category

21st Century and Contemporary Unknown More Jewelry

Materials

Diamond

10.01 Carat GIA Cert Radiant Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
rectangular Radiant cut diamond center stone with over 2.00ctw trillion diamond sidestones. This piece is the
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

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Certed Diamonds For Sale on 1stDibs

There is a broad range of certed diamonds for sale on 1stDibs. All of the items for sale were constructed with extraordinary care, often using Platinum, Gold and 18k Gold. Our collection of these items for sale includes 320 vintage editions and 480 modern creations to choose from as well. Our inventory has long been popular, and it includes earlier versions that date to the 18th Century and newer variations that were made as recently as the 21st Century. Pieces in our collection of certed diamonds made by Art Deco jewelers — as well as those associated with Modern — are very popular. J. Birnbach, Polya Medvedeva Jewellery and Tiffany Co. each produced beautiful examples of these items that are worth considering. Today, if you’re looking for round cut certed diamonds and are unable to find the perfect match, our selection also includes cushion cut and emerald cut alternatives. If you’re browsing the variety of certed diamonds for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are Certed Diamonds?

Prices for certed diamonds can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1,100 and can go as high as $4,450,000, while certed diamonds, on average, fetch $23,387.

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.