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1.72 Carat Natural Emerald and Diamond Cocktail Ring in 18k White Gold
Located in Hong Kong, HK
Emerald CTW: 1.04ctw • Total Diamond CTW: 1.20ctw • Diamond Color Clarity: D-E Color VS1-2 Clarity
Category

Early 2000s Unknown Art Deco Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Square Cut Emerald and Round Brilliant Diamond Engagement Ring in 18K White Gold
Located in Hong Kong, HK
Diamonds, total carat around 0.18ct - D-F in color and VS in clarity, with Heart and Arrow (Ideal cut
Category

2010s Hong Kong Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Tension Twist Round Cut Emerald and Diamond Engagement Ring in 18K White Gold
Located in Hong Kong, HK
Round Cut Emerald 6 Round Brilliant cut Diamonds with 0.09ct total carat weight Very high Diamond
Category

2010s Hong Kong Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

1CT Emerald Cut GH-I1 Natural Diamond Halo Engagement Ring 14K Yellow Gold
Located in Los Angeles, CA
Emerald Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

1CT Emerald Cut GH-I1 Natural Diamond Halo Engagement Ring 14K Yellow Gold
Located in Los Angeles, CA
Emerald Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

Van Cleef Arpels Cosmos Diamond and Emerald Earrings and Brooch
By Van Cleef Arpels
Located in New York, NY
approximately 8.00 carat, color D-F, clarity VVS - VS. Oval cut emerald in the center weighs approximately 0.75
Category

20th Century French Artist Clip-on Earrings

Materials

Diamond, Emerald, 18k Gold

Graff Platinum AGL Gubelin 13.64ctw Emerald Diamond Drop Dangle Earrings
By Graff
Located in Montclair, NJ
--Stone(s):-- (2) Natural Genuine Emeralds - Pear Brilliant Cut - Prong Set - Vivid Green Color
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Emerald, Platinum

Antique Unisex Emerald and Diamond Band in 18k Yellow Gold
Located in Jesmond, Newcastle Upon Tyne
(width) x 3.50mm (depth) Diamond Quality Feature Diamond One Color D Clarity SI1 Cut Round Brilliant
Category

Antique Early 1900s Australian Band Rings

Materials

Diamond, Emerald, Yellow Gold

Emerald Cut Natural Tanzanite Natural Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
identical in size or color. This statement ring features a vibrant emerald-cut natural tanzanite at the
Category

21st Century and Contemporary Indian Art Deco Engagement Rings

Materials

Tanzanite, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Emerald Cut Natural Diamond Statement Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
SGL. A wide rectangular frame surrounds the center emerald-cut diamonds with a double halo and
Category

21st Century and Contemporary Indian Art Deco Cluster Rings

Materials

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

Pristine 1.05ct Double Excellent Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
. Stone: 2 pcs of Diamonds Stone carat weight: 1.05ct Shape: Emerald Cut Color grade: D Clarity grade
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Magnificent 1.41ct Double Excellent Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
piece. Stone: 2 pcs of Diamonds Stone carat weight: 1.41ct Shape: Emerald Cut Color grade: D Clarity
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Emerald Cut Halo Natural Diamond Bangle Bracelet in 14k Solid Gold (Certified)
Located in New Delhi, DL
SGL. This bracelet features a refined sequence of emerald-cut baguette diamonds arranged within halo
Category

21st Century and Contemporary Indian Art Deco Bangles

Materials

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

3.68 Carat Natural Emerald Ring for Women Engagement, 3 Stone Ring
Located in Ramat Gan, IL
Shape: triangle Number of stones 2 Carat weight : 0.53 carat Color grade :D -E Clarity grade : SI1 Cut
Category

2010s Israeli Art Deco Three-Stone Rings

Materials

Diamond, Emerald, 18k Gold

White Gold Synthetic Emerald Diamond Halo Ring, 14k Square 1.51ctw Engagement
Located in Greensboro, NC
Information: Synthetic Emerald Carat: 1.19ct Cut: Square Color: Green Size: 7mm (square) Natural Diamonds
Category

Late 20th Century Unknown More Jewelry

Materials

Diamond, Emerald, White Gold

25.00 Ct Oval Sapphire Ring, 0.30 Natural Emeralds, 1.10 Carat Natural Diamonds
Located in Ramat Gan, IL
: Blue Cut: Excellent Natural Emeralds Shape: Pear Carat: 0.30 carat Color: Green Number of stones: 2
Category

2010s Israeli Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, 18k Gold

Vintage 1.60ct Emerald 2.63 Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
Oval Faceted Content 1.60 carats Diamond Quality Feature Diamond One Colour D Clarity VVS1 Cut
Category

Vintage 1950s French Cocktail Rings

Materials

Diamond, Emerald, Platinum

GIA Rare 4.24 Ct. Fine Colombian Emerald Diamond Platinum Ring
Located in Honolulu, HI
Emerald has vibrant green color, a real gem. The 16 diamond halo features 14 round brilliant cut diamonds
Category

Late 20th Century Colombian Cocktail Rings

Materials

Diamond, Emerald, Platinum

1950s Emerald and Diamond White Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
Content 0.55 carat Dimensions 5.19mm x 4.70mm x 3.11mm Diamond Quality Diamond One Color D Clarity VVS1
Category

Vintage 1950s Unknown Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, White Gold

Captivating Emerald and Diamonds Cluster Ring in 18k White Gold - GIA Certified
Located in רמת גן, IL
: Green Side stone: 6 pcs Diamonds Side stone carat weight: 0.31ct Shape: (2) Marquise and (4) Pear Color
Category

2010s Israeli Cluster Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Alexander Beverly Hills GIA 5.97ct Emerald Diamond 3-Stone Ring 18k White Gold
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
cut emerald, F2. 2 pear brilliant diamonds, 1.12 carats. Both sones GIA certified, one stone D color
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

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

Natural Emerald Diamond Bypass Ring in 14K Solid Gold (Certified)
Located in New Delhi, DL
MATERIALS ★ Stone: Natural Emerald Shape: Emerald Carat: 0.56 ct Color: Green Stone: Natural Diamond
Category

21st Century and Contemporary Indian Art Deco Cluster Rings

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Natural Emerald Diamond Wedding Ring in 14K Solid Gold (Certified)
Located in New Delhi, DL
Shape: Emerald Cut Carat: 1.6 ct ♥ Stone: Natural Diamonds Shape: Round Carat: 0.26ct Clarity: SI-I1
Category

21st Century and Contemporary Indian Art Deco Engagement Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Edwardian Colombian Emerald and Diamond Coronet Cluster Ring, French, circa 1910
Located in London, GB
emerald-cut natural Colombian emerald with no colour enhancement and minor clarity enhancement in an open
Category

Vintage 1910s French Edwardian Cluster Rings

Materials

Diamond, Emerald, Platinum

Emerald Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
. ★ MATERIALS ★ ♥ Stone: Natural Diamonds Shape: Round Carat: 0.14ct Color: HI Clarity: SI ♥ Stone
Category

21st Century and Contemporary Indian Art Deco Wedding Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Natural Emerald Diamond Ring in 14K Solid Gold (Certified)
Located in New Delhi, DL
Emerald Shape: Emerald Cut Carat: 2.03 ct Color: Green Stone: Natural Diamond Shape: Round Carat
Category

21st Century and Contemporary Indian Art Deco Three-Stone Rings

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Gia Certified Platinum Toi Et Moi Ring with 2.81 Ctw Colombian Emerald Diamond
Located in Miami, FL
cuts diamonds, E color, VS-1 clarity, 0.68 carats. Have a total weight of 9.6 grams and the actual
Category

Late 20th Century American Art Deco Cocktail Rings

Materials

Diamond, Emerald, White Diamond, Platinum

Natural Emerald and Diamond Double Halo Engagement Ring in 18K White Gold
Located in Hong Kong, HK
Diamonds: Carat total weight 1.02 - Diamond quality: D-F color, VS+ clarity, Excellent cutting - Metal: 18K
Category

2010s Hong Kong Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Shreve, Crump Low GIA Certified 7.03 Ct Fancy Yellow Square Cut Diamond Ring
By Shreve, Crump Low
Located in Boston, MA
yellow gold 3 stone ring consisting of 1 square emerald cut yellow diamond weighing 7.03 carats with
Category

2010s American Engagement Rings

Materials

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

Cartier Panthère de Cartier Ring in 18K Rose Gold Diamonds, Emeralds Ring
By Cartier
Located in Chicago, IL
Round Brilliant Cut diamonds, totaling approximately 1.15 carats, the diamonds are of exceptional D–F
Category

2010s French Contemporary Engagement Rings

Materials

Diamond, White Diamond, Emerald, Onyx, 18k Gold, Rose Gold

Natural Emerald Diamond Station Necklace in 14K Solid Gold (Certified)
Located in New Delhi, DL
Color: Green Stone: Natural Diamond Shape: Round Carat: 0.15 ct Clarity: SI-I1 Color: GH ★ THE METAL ★
Category

21st Century and Contemporary Indian Art Deco Pendant Necklaces

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 10k Gold, 14k Gold...

Emerald Natural Diamond Halo Drop Necklace in 14K Solid Gold (Certified)
Located in New Delhi, DL
identical in size or color. This station-style necklace features alternating pear-cut emerald drops and
Category

21st Century and Contemporary Indian Art Deco Pendant Necklaces

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Halo Emerald Natural Diamond Necklace in 14K Solid Gold (Certified)
Located in New Delhi, DL
: Natural Emerald Shape: Emerald Cut Carat: 3.00ct Clarity: SI-I1 Color: GH ★THE METAL★ 14K Solid Gold
Category

21st Century and Contemporary Indian Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Gemstone Halo Natural Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
: Natural Diamonds Shape: Round Carat: 0.50ct Clarity: SI-I1 Color: GH ♥ Stone: Natural Emerald Shape
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Natural Colombian Emerald and Diamond Cluster Ring by Oscar Heyman Brothers
By Oscar Heyman
Located in London, GB
old cut natural Colombian emerald with no colour enhancement in an open back rubover setting with an
Category

Vintage 1970s American Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

Natural Pear Emerald Diamond Bypass Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
Shape: Pear Carat: 2.15 ct Color: Green Stone: Natural Diamond Shape: Round Carat: 0.18 ct
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Halo Natural Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
diamonds, all set in 14k solid gold. The emerald-cut center stone is framed by a sparkling diamond halo
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, 10k Gold, Rose Gold, White Gold, Yello...

Teardrop Emerald Natural Diamond Tennis Bracelet in 14K Solid Gold (Certified)
Located in New Delhi, DL
Stone: Natural Diamonds Shape: Marquise Carat: 0.83ct Color: GH Clarity: SI-I1 ♥ Stone: Natural
Category

21st Century and Contemporary Indian Art Deco Tennis Bracelets

Materials

Diamond, Emerald, 14k Gold, Gold, Yellow Gold, White Gold, Rose Gold

Halo Emerald Natural Diamond Drop Necklace in 14K Solid Gold (Certified)
Located in New Delhi, DL
Emerald Shape: Emerald Cut Carat: 10.15ct Color: Green ★THE METAL★ 14K Solid Gold Available in Rose
Category

21st Century and Contemporary Indian Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Drop Gemstone Natural Diamond Earrings in 14K Solid Gold (Certified)
Located in New Delhi, DL
Emerald Shape: Pear and emerald cut Carat: 7.39ct Color: Green ★THE METAL★ 14K Solid Gold Available in
Category

21st Century and Contemporary Indian Art Deco Dangle Earrings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Oval Natural Emerald Diamond Halo Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
meaningful gift. ★ MATERIALS ★ ♥ Stone: Natural Diamonds Shape: Round Carat: 0.33ct Color: GH Clarity: SI
Category

21st Century and Contemporary Indian Art Deco Band Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

House of Igor Carl Fabergé Yellow Gold Amethyst Emerald Diamond Floral Earrings
By Peter Carl Fabergé
Located in New York, NY
amethyst and emerald Accents: 2 round-cut diamonds, approx. 0.05 carats total Weight: Approx. 4 grams
Category

20th Century Russian Retro Clip-on Earrings

Materials

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

Halo Oval Emerald Natural Diamond Necklace in 14k Solid Gold (Certified)
Located in New Delhi, DL
: Natural Diamonds Shape: Round Carat: 4.10ct Clarity: SI-I1 Color: GH ♥ Stone: Natural Emerald Shape: Oval
Category

21st Century and Contemporary Indian Art Deco Beaded Necklaces

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Gemstone Natural Diamond Engagement Ring in 14K Solid Gold (Certified)
Located in New Delhi, DL
Carat: 1.1 ct Color: Green ♥ Stone: Natural Diamonds Shape: Round Carat: 0.21ct Clarity: SI-I1 Color
Category

21st Century and Contemporary Indian Art Deco Engagement Rings

Materials

Emerald, Diamond, Yellow Gold, White Gold, Rose Gold, 14k Gold, Gold

Natural Pear Square Emerald Diamond Bypass Ring in 14K Solid Gold (Certified)
Located in New Delhi, DL
: Natural Emerald Shape: Pear Emerald Carat: 1.42 ct Color: Green Stone: Natural Diamond Shape
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

0.30 Ct Fine Natural Ruby 2 Ct Finest Diamond 18 Kt White Gold Flower Ring
Located in New York, NY
alongside 2 Carats of brilliant cut and Pear shape diamonds set in lustrous white gold. This ring stands as
Category

2010s Solitaire Rings

Materials

Diamond, Emerald, Ruby, Sapphire, Gold, 18k Gold, White Gold

3.60ct Emerald Gemstone Ring with Natural Diamonds in 14K Solid Gold (Certified)
Located in New Delhi, DL
identical in size or colour. This prong-set ring features a rectangular emerald-cut green gemstone, held
Category

21st Century and Contemporary Indian Art Deco Solitaire Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Gemstone Double Halo Natural Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
: GH ♥ Stone: Natural Emerald Shape: Emerald Cut Carat: 0.80ct Color: Green ★THE METAL★ 14K Solid
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

3.70ct Emerald Gemstone Ring with Natural Diamonds in 14k Solid Gold (Certified)
Located in New Delhi, DL
: Natural Emerald Shape: Emerald Carat: 3.70 ct Colour: Green ♥ Stone: Natural Diamond
Category

21st Century and Contemporary Indian Art Deco Bridal Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Halo Oval Emerald Diamond Necklace Earring Set in 14k Solid Gold (Certified)
Located in New Delhi, DL
look. ★ MATERIALS ★ NECKLACE ♥ Stone: Natural Diamonds Shape: Round Carat: 4.19ct Clarity: SI-I1 Color
Category

21st Century and Contemporary Indian Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Ruby Gemstone Halo Natural Diamond Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
: Emerald Cut Carat: 4.76ct ♥ Side Stone - Natural Diamonds Shape: Round Carat: 1.17ct Color: GH Clarity
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

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

1CT GH-I1 Natural Emerald Diamond Halo Engagement Ring 14K White Gold
Located in Los Angeles, CA
Emerald Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT Emerald GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold
Located in Los Angeles, CA
Emerald Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Cartier La Calda Panthère Panther Diamond Emerald Onyx Cocktail Ring White Gold
By Cartier
Located in Lisbon, PT
brilliant-cut; estimated 2.10 carats in total; D-F color (assessed); internally flawless to VS clarity
Category

Early 2000s French Contemporary Cocktail Rings

Materials

Diamond, Emerald, Onyx, Gold, 18k Gold, White Gold

GIA Certified Unheated Purple Sapphire and Diamond Engagement Ring, 2.14 Carats
By Sarosi By Timeless Gems
Located in Los Angeles, CA
unheated. The Asscher-cut (square emerald-cut) diamonds are beautifully matched, D-color with VS-1 clarity
Category

21st Century and Contemporary American Artisan Engagement Rings

Materials

Diamond, Sapphire, Purple Sapphire, Rose Gold, Platinum, Gold, 18k Gold

Oval Emerald Natural Diamond Open Cuff Gem Ring in 14k Solid Gold (Certified)
Located in New Delhi, DL
: Natural Diamonds Shape: Round Carat: 0.15ct Clarity: SI-I1 Color: GH ♥ Stone: Natural Emerald Shape
Category

21st Century and Contemporary Indian Art Deco Solitaire Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold

Emerald Illusion Wedding Natural Diamond Ring 14k Solid Gold (Certified)
Located in New Delhi, DL
from every angle. ★ MATERIALS ★ ♥ Stone: Natural Diamonds Shape: Round Carat: 0.24ct Color: GH
Category

21st Century and Contemporary Indian Art Deco Wedding Rings

Materials

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

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2 Carat Emerald Cut Diamond D Color For Sale on 1stDibs

Find the exact 2 carat emerald cut diamond d color you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Platinum. Find an antique version now, or shop for 8 vintage or 91 modern creation for a more contemporary example of these cherished accessories. You’re likely to find the perfect 2 carat emerald cut diamond d color among the distinctive items we have available, which includes versions made as long ago as the 20th Century as well as those produced as recently as the 21st Century. A 2 carat emerald cut diamond d color from Antinori Fine Jewels, Merkaba and TJD — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for an emerald cut version of this piece and are unable to find the perfect match, our selection also includes brilliant cut and mixed cut alternatives. When shopping for a 2 carat emerald cut diamond d color, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 2 Carat Emerald Cut Diamond D Color?

Prices for a 2 carat emerald cut diamond d color can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1,424 and can go as high as $4,450,000, while this accessory, on average, fetches $83,195.

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.