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Diamond Rings

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Fancy Intense Yellow Diamond Ring, Platinum and Gold, 14.51 Carats
Located in London, GB
A yellow diamond ring, set with a 14.51ct fancy intense yellow colour, VS1 clarity, cushion shaped, modified brilliant-cut diamond, measuring 13.45 x 13.01 x 9.00mm, accompanied by G...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

White Diamond, Yellow Diamond, Gold, Platinum

Faye Kim 18k Gold Emerald Ring with Trapezoid Diamonds
Located in Westport, CT
Make a statement with this exquisite 3-stone Brazilian Emerald Ring. Flanked by trapezoid diamonds in 18k matte gold*, it's perfect as a right-hand statement ring or an engagement r...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, Emerald, 18k Gold

Handcrafted Arielle Old European Cut Diamond Ring by Single Stone
Located in Los Angeles, CA
1.68ct M/VS1 GIA certified old European cut diamond with 0.09ctw old European cut accent diamonds set in a handcrafted 18K yellow gold mounting. Ring is currently a size 6 and can b...
Category

21st Century and Contemporary Diamond Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

19.09 Carat African Emerald and Diamond Ring
Located in New York, NY
A majestic 19.09 Carat African Emerald and Diamond Ring. With white diamonds weighing 2.54 carats. This marvelous piece is set in Platinum material. The bottom shank measures 0.31". ...
Category

Late 20th Century Diamond Rings

Materials

Diamond, Emerald, Platinum

Handmade White Gold Mint Tourmaline and Baguette Diamond Geometric Ring
Located in Brisbane, QLD
Handmade 18ct White Gold Octagonal Cut 6.73ct Mint Green Tourmaline flanked by F/G Baguette diamonds. TDW 1.06ct.
Category

2010s Art Deco Diamond Rings

Materials

Tourmaline, Diamond, White Gold, 18k Gold

Vivid Diamonds GIA Certified 5.13 Carat Oval Diamond Engagement Ring
Located in Miami, FL
Exquisite Vivid Diamonds Engagement ring finely crafted in platinum showcasing a spectacular GIA certified oval cut diamond weighing 5.13 carats, G color, VS2 clarity, adorned with t...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

Diamond, Platinum

Vivid Diamonds 5.03 Carat Emerald Cut Diamond Engagement Ring
Located in Miami, FL
Spectacular Vivid Diamonds Engagement ring crafted in platinum, showcasing a sensational GIA Certified Emerald Cut Diamond weighing 5.03 carats, J color, VVS2 clarity, and two baguet...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

Diamond, Platinum

IGI Certified 22 Carat NEON Paraiba Tourmaline Oval Diamond Cocktail Ring
Located in Rome, IT
A stunning 22 carat Paraiba tourmaline displays its brilliant aqua color in this amazing ring. Paraiba tourmalines are among the most valuable gemstones in the world, and this stone ...
Category

2010s Modern Diamond Rings

Materials

Diamond, White Diamond, Tourmaline, Paraiba, 18k Gold

4 Carat Black Opal and Diamond Ring
Located in Aliso Viejo, CA
A beautiful purple bleu black opal is the center stone in this classically inspired cocktail ring. The center stone is a 4-carat natural black opal with a gorgeous matrix of purple ...
Category

Early 2000s Modern Diamond Rings

Materials

Diamond, Opal, Black Opal, 18k Gold, Yellow Gold, Platinum

Scarselli 6 Carat Fancy Vivid Yellow Emerald Cut Diamond Ring in Platinum
Located in New York, NY
From SCARSELLI, this beautiful statement ring features a 6-carat Fancy Vivid Yellow Radiant Cut Diamond of VS2 clarity flanked by a couple of E color VS clarity trapezoid cut white d...
Category

2010s Contemporary Diamond Rings

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

Emilio Jewelry GIA Certified 13.00 Carat Fancy Intense Yellow Diamond Ring
Located in New York, NY
From the vault at Emilio Jewelry New York, set in the center a rare fancy intense yellow diamond certified by Gia. This is a very desirable shape because it is an elongated cushion w...
Category

21st Century and Contemporary Diamond Rings

Materials

Yellow Diamond

Bespoke Platinum Ring with GIA 3.01 Carat J/VS2 Antique Cushion Diamond
Located in New York, NY
Cosmo™ engagement ring featuring the GIA-certified 3.01 carat J/VS2 True Antique™ cushion diamond. The center stone is accentuated with bright-cut pave set delicately in the basket a...
Category

2010s Diamond Rings

Materials

Diamond, White Diamond, Platinum

Oscar Heyman 7.50 Carats Pave Diamond 18 Karat Gold Bombe Band Ring
Located in Philadelphia, PA
Domed bombè style band is pavè set to front with round brilliant cut diamonds Graduating in size while weighing in total approximately 7.50 carats - G to I color with VS clarity St...
Category

1970s Contemporary Vintage Diamond Rings

Materials

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

22 Carat Natural Ceylon Sapphire Diamond Platinum Ring
Located in New York, NY
An impressive oval cut Ceylon sapphire weighing 22.07 carats is the centerpiece of this finely handcrafted platinum diamond ring. The sky-blue sapphire which is eye-clean is accompan...
Category

2010s Diamond Rings

Materials

Diamond, Sapphire, Platinum

Faye Kim 18k Gold Old European Cut Cushion Diamond Ring
Located in Westport, CT
Old European Cut Cushion Diamond Ring with an open bezel in 18k gold* with a matte finish. Can be beautifully stacked; mix and match for a custom look. *In Faye Kim's signature 18k ...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, 18k Gold

Australian Opal Diamond Ring 14 Karat Yellow Gold
Located in Barnsley, GB
This Oceanic 14KT Yellow Gold & Diamond Australian Opal Ring with diamonds at each side and shows a brilliant blue and green sea colored which flashes that dance and play through...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Diamond, Opal, 14k Gold, Yellow Gold

Faye Kim 18k Gold Emerald Cut Diamond Ring
Located in Westport, CT
Faye Kim's Emerald cut diamond ring is handcrafted in 18k gold*. Set horizontally with a thin band, the stone is beautifully highlighted in a matte finished bezel for a clean, contem...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, 18k Gold

Antique GIA 1.53 Carat Old Mine Cut Diamond White Gold Cluster Ring
Located in Beverly Hills, CA
Antique GIA 1.53 Carat Old Mine Cut Diamond White Gold Cluster Ring. Featuring GIA certified 1.53 carat, H color, SI2 clarity (#6217960998). Surrounded by 8 Old Mine Cuts, approximat...
Category

1920s Victorian Vintage Diamond Rings

Materials

Diamond, 18k Gold, White Gold

Handcrafted Dallas Old European Cut Diamond Ring by Single Stone
Located in Los Angeles, CA
0.76ct K/SI2 GIA certified old European cut diamond with 1.27ctw old European cut accent diamonds set in a handcrafted 18K yellow gold mounting. Ring is currently a size 6 and can b...
Category

21st Century and Contemporary Diamond Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

22.69 Carat Rubellite & Diamond Cuban Link 18k Gold Ring
Located in New York, NY
One of our best designs from the Mindi Mond New York "Icon" Collection. Luxury at its best! 22.69 Carat Rubellite Tourmaline @ 21.10x 16.02x 10.00mm= 22.29 CTW. pinkish/red; Transpar...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Diamond, Rubelite, 18k Gold

Burma Ruby, Diamond Gold Ring
Located in New York, NY
Burma Ruby, Diamond Gold Ring An 18k white gold ring, set with cushion shaped Burma no heat ruby, and pear shaped diamonds, circa 1960s Burma no heat ruby weight approx.- 3.84 cts. w...
Category

1960s Vintage Diamond Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ugo Cala Diamond, Ruby, and Sapphire 18K Ring
Located in Dallas, TX
Ugo Cala ring with 2.18ctw of ruby and pink sapphires, 0.49ctw of diamonds, set in 18K rose and white gold. This captivating ring features a disk of pave set rubies and pink sapphire...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold, Rose Gold

4.58 Carat Brown Yellow Shield Cut Diamond Engagement Ring in 18K White Gold
Located in New York, NY
Unique and distinctive 4.58 carat Brown Yellow Shield Cut Diamond handcrafted in 18k yellow gold. The details are as follows : Brown yellow shield cut diamond weight : 4.58 carat (...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, White Gold

Emilio Jewelry GIA Certified 5.00 Carat Fancy Green Diamond Ring
Located in New York, NY
From the museum vault at Emilio Jewelry New York, An ultra rare center stone weighing over 5.00 carats certified by Gia as Fancy green with yellow overtone. Please inquire for more ...
Category

21st Century and Contemporary Diamond Rings

Materials

Blue Diamond, Pink Diamond

Alex Sepkus Blue Violet Sapphire and Diamond 18K Gold Cocktail Ring 2.30 Carat
Located in SOLVANG, CA
From the studio of Alex Sepkus in New York - 18 karat yellow gold ring with stunning oval shaped vivid violet blue sapphire and set with 10 brilliant cut white diamonds. This ring is...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

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

Sapphire Diamond White Gold Cocktail Ring
Located in Dallas, TX
This stunning ring is set with Sapphires (2.40 TCW) and Diamonds (.48 TCW) in 14k white gold.
Category

2010s Modern Diamond Rings

Materials

Diamond, Sapphire, White Gold

Round Yellow Diamond Ring 4.01 Carat, Set in Platinum/18 Karat Yellow Gold
Located in Beverly Hills, CA
Yellow Round Diamond Ring 4.01 carats set with 2.17 carats Micro pave. Spectacular. Set in Platinum/18KYG Stunning! Looks like nice FANCY LIGHT YELLOW. Round Diamond weighs 4.01 ...
Category

2010s Contemporary Diamond Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

18 Karat White Gold Acquamarine Diamonds Ring
Located in Milano, IT
Acquamarine and white diamond ring, the external surface is smooth and rounded, and it has been carved inside to recreate a knurled effect. US Size: 7.5 Weight: 26 gr circa The fin...
Category

2010s Diamond Rings

Materials

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

GIA Certified 3.50 Carat Ceylon Sapphire No Heat Diamond Cocktail Ring
Located in Rome, IT
GIA Certified Ceylon Sapphire NO HEAT Diamond Cocktail Ring
Category

2010s Modern Diamond Rings

Materials

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

Platinum Ring with 9.56 Carat, Royal Blue Ceylon Sapphire
Located in Sarasota, FL
Platinum ring with GIA and GRS certified 9.56 carat, oval cut, Royal Blue Ceylon Sapphire, set with two trapezoid cut diamonds weighing 0.76 carats and 0.52 carats of round brilliant...
Category

2010s Diamond Rings

Materials

Diamond, Sapphire, Platinum

7.30 Carat Tanzanite Cabochon Diamond Enamel Ring in 18 Karat White Gold
Located in Hong Kong, HK
This ring features a 7.30 carat tanzanite set in 18 karat white gold, assented with 0.40 carat of round diamond. The diamond halo is outlined with black enamel. A simple yet modern d...
Category

2010s Modern Diamond Rings

Materials

Diamond, Tanzanite, Enamel, 18k Gold, White Gold

GIA Certified 5.26 Carat Round Brilliant Cut Ring Pavè Ring
Located in Rome, IT
Jaw-dropping in size, this great 5.26 carat GIA certified diamond ring is colorless, 100% eye clean, and displays absolutely phenomenal sparkle! This large round brilliant cut diamon...
Category

2010s Modern Diamond Rings

Materials

Diamond, White Diamond

Classic Emerald Cut Emerald and Fancy Cut Diamond Set in 18K White Gold
Located in New York, NY
Emerald Cut Emerald and Fancy cut Diamond set in 18K White Gold is simply beautiful and classic looking. Ring Size: 7 ( Can be sized ) 18KT: 3.914gms, Diamond: 1.15cts Emerald: 4....
Category

21st Century and Contemporary Art Deco Diamond Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Designer Emerald and White Diamond Ring in 18K white Gold
Located in New York, NY
This designer Emerald and White Diamond Ring in 18K white Gold is one of the gorgeous ring we have and is full of charm and uniqueness. Ring Size: 7 ( Can be sized ) 18KT: 6.572gms...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

White Diamond, Emerald, 18k Gold, White Gold

Van Cleef & Arpels Duck Toi & Moi Coral Diamonds Emeralds 18 Carats Yellow Gold
Located in Paris, FR
A beautiful yellow gold pinky ring presenting two duck heads, carved and scalloped in pink coral, the beaks, eyes and neck set with brilliant-cut diamonds and emeralds. Ring size : ...
Category

1970s Contemporary Vintage Diamond Rings

Materials

Coral, Diamond, Emerald, 18k Gold, Yellow Gold

GIA Certified 2.50 Carat F Color Oval Cut Diamond 18kt White Gold Ring
Located in Rome, IT
GIA Certified 2.50 Carat Diamond Ring The main stone is F color and VS2 clarity oval shape natural diamond. The setting is made in solid 18K white gold.
Category

2010s Modern Diamond Rings

Materials

Diamond, 18k Gold, White Gold

GRS Switzerland GIA Certified Burma Burmese No Heat Ruby Diamond Cocktail Ring
Located in Rome, IT
Antinori Fine Jewels is proud to show this exclusive cushion mixed-cut Burma ruby exhibits its ideal red hue in this ring. For centuries, rubies from Myanmar, Burma has ranked among ...
Category

2010s Diamond Rings

Materials

Diamond, White Diamond, Ruby, 18k Gold

EXCEPTIONAL FLAWESS GIA Certified 5 Carat Asscher Cut Diamond Solitaire Ring
Located in Rome, IT
GIA Certified 5 Carat Asscher Cut Diamond Color F Clarity Internally Flawless Excellent Cut Excellent Polish None Fluorescence Retail value $390,000 (includes appraisal for insuranc...
Category

2010s Modern Diamond Rings

Materials

Diamond, White Diamond, 18k Gold

GIA Certified 1.94 Carat Oval Diamond Platinum Ring
Located in Rome, IT
GIA Certified 1.94 Carat Oval Diamond Platinum Ring F Color SI1 Clarity 100% eye clean diamond
Category

2010s Modern Diamond Rings

Materials

Diamond, White Diamond, Platinum

French Art Deco Natural Pearl & Diamond Ring
Located in Southbury, CT
Created in France in the 1920s, this natural saltwater pearl and diamond ring is a geometric tour de force. We've all seen Art Deco platinum and pearl rings. And we've all admired t...
Category

1920s Art Deco Vintage Diamond Rings

Materials

Diamond, Pearl, Natural Pearl, Platinum

Art Deco Garnet & Diamond Ring
Located in Southbury, CT
This circa 1920s Art Deco ring features an impressive and fiery raspberry-red rhodolite garnet. This scintillating stone measures approximately 9.93 mm x 10.17 mm and weighs just ove...
Category

1920s Art Deco Vintage Diamond Rings

Materials

Diamond, Garnet, 15k Gold

2.82 Carat Peridot Diamond 14 Karat Yellow Gold Engagement Ring
Located in San Dimas, CA
This beautiful Ring has a Pear Cut Peridot in the center that weighs 2.25 Carats. The ring is surrounded by a Halo of 34 Rounds Cut Diamonds that weigh 0.57 Carats. The Total Carat w...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

Diamond, Peridot, 14k Gold, Yellow Gold

Vintage Van Cleef & Arpels Diamond Band Ring Set in 18k Yellow Gold
Located in London, GB
A beautiful vintage Van Cleef & Arpels diamond band ring set in 18k yellow gold. The ring is comprised of three rows of round brilliant cut diamonds which are pavé set in a subtle ...
Category

Early 2000s Retro Diamond Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

3.58 Carat Oval Cut Fire Opal Sapphire Diamond 14 Karat Yellow Gold Ring
Located in San Dimas, CA
This Ring has a 2.06 carat Oval Cut Fire Opal as its center stone and is beautifully surrounded by 12 Multi-Colored Sapphires that weigh 1.52 Carats and 12 Round Cut Diamonds that we...
Category

21st Century and Contemporary Modern Diamond Rings

Materials

Diamond, Opal, Sapphire, Fire Opal, 14k Gold, Yellow Gold

Nathalie Jean 0.165 Carat Diamond Ruby Tourmaline Pearl Carnelian Gold Rings
Located in Milan, Lombardia
Made by hand in Nathalie Jean's Milan atelier, Microcosmos Three Rings are devised as a game, a construction or a sophisticated aerial mobile. Shapes attached to gold rings dangle li...
Category

Early 2000s Contemporary Diamond Rings

Materials

Carnelian, Diamond, Pearl, Cultured Pearl, Ruby, Tourmaline, Gold, 18k G...

Faye Kim 18k Gold Old European Cut Freeform Diamond Ring
Located in Westport, CT
Faye Kim created this 18k Gold* open bezel freeform diamond ring with a matte finish to wear alone or stack for your own unique look. *In Faye Kim's signature 18k green gold, an allo...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, 18k Gold

GRS Certified GRS Certified Ruby and Diamond Art Deco Cocktail Ring in 18KT Whit
Located in Houston, TX
Superbly elegant ruby and diamond lady's cocktail ring handmade in 18KT white gold featuring an elongated oval natural ruby weighing 7.01 carats accompanied by GRS (Gem Research Swis...
Category

Late 20th Century Contemporary Diamond Rings

Materials

Diamond, Ruby, White Gold

Blue Sapphire with Diamond Ring Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Blue Sapphire 3.48 carats with Blue Sapphire 7.92 carats and Diamond 0.57 carat Ring set in 18 Karat White Gold Settings Width: 2.0 cm Length: 2.0 cm Ring Size: 52 Total Weight: ...
Category

2010s Art Deco Diamond Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Cartier Diamond Multicolor Gemstone White Gold Ring
Located in New York, NY
This fantastic Cartier ring is crafted in 18k white gold and features a vibrant cluster of colorful gemstones - red rubies, yellow sapphires, tourmaline, and rose quartz - accented w...
Category

2010s Diamond Rings

Materials

Diamond, Quartz, Ruby, Sapphire, Tourmaline, White Gold

9.19 Carat Sapphire Diamond Cocktail Ring 14 Karat White Gold
Located in Barnsley, GB
9.19 Carat Sapphire Diamond Ring 14 Karat White Gold . This show off mix of color Sapphire stones Blue Yellow Orange Green Pink and 21 White Diamonds. If you are looking for a...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Yellow Sapphire, Green ...

Faye Kim 18k Gold Old European Cut Diamond Ring
Located in Westport, CT
Beautifully handcrafted in Faye Kim's signature 18k* gold, this Old European Cut diamond is bezel set and is the perfect engagement ring for today's bride. Perfect for stacking with ...
Category

2010s Contemporary Diamond Rings

Materials

Diamond, 18k Gold

37.5 Carat Aquamarine Ruby and Diamond Platinum Ring Estate Fine Jewelry
Located in Montreal, QC
37.50 Carat Aquamarine Ruby and Diamond Platinum Cocktail Ring Estate Fine Jewelry Simply Beautiful! Aquamarine and Diamond Platinum Ring. Center securely set with an Aquamarine weig...
Category

21st Century and Contemporary Art Deco Diamond Rings

Materials

Aquamarine, Diamond, Ruby, Platinum

Antique French GIA 1.59 Carat Diamond Platinum Ring
Located in Beverly Hills, CA
Antique French GIA 1.59 Carat Diamond Platinum Ring. Featuring GIA certified Old European Cut Diamond 1.59 carat, I color, SI1 clarity (#2215960236). Accompanied by Old European Cut ...
Category

1920s Edwardian Vintage Diamond Rings

Materials

Diamond, Platinum

Retro GIA Sapphire Diamond Platinum Ring
Located in Beverly Hills, CA
Retro GIA Sapphire Diamond Platinum Ring. Featuring GIA octagon 2.11 carat Purple-Pink sapphire (#5212010858). Accented by 2 tapered baguettes approximately 0.20 carat total, G color...
Category

1950s Retro Vintage Diamond Rings

Materials

Sapphire, Diamond, Platinum

4.18 Carat GIA Certified Emerald and Diamond Ring
Located in Houston, TX
Beautiful three stone engagement ring in 18KT white gold featuring an incredibly gorgeous 4.18 carat GIA certified step cut prong set deep green emerald center set between two trapez...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Emerald, Diamond, White Gold

12 Carat Cushion Tanzanite and Diamond Gold Cocktail Ring Estate Fine Jewelry
Located in Montreal, QC
Simply Beautiful! Cushion Pink Tanzanite and Diamond Gold Ring. Center securely set with a Cushion Tanzanite weighing 12 Carat. Amazing color! Surrounded by Hand set Diamonds, approx...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Diamond, Tanzanite, Gold, 14k Gold, Yellow Gold

Coral Amethyst Diamond 18 Karat Gold 1980s Cocktail Ring
Located in New York, NY
This extravagant 1980s cocktail ring features an oxtail-blood red oval coral that is measured to be approximately 12.5 carats. At a slight angle 16 bright white and sparkly round bri...
Category

1980s Vintage Diamond Rings

Materials

Amethyst, Coral, Diamond, Gold, 18k Gold, White Gold, Yellow Gold

6.99 Carat Blue Topaz Diamond 14 Karat White Gold Ring
By DGI
Located in Los Angeles, CA
This stunning statement ring has a large Oval Cut Blue Topaz that weighs 6.28 Carats. It is surrounded by a simple halo of 18 Round Cut Diamonds that weigh 0.71 Carats. It is craf...
Category

21st Century and Contemporary Contemporary Diamond Rings

Materials

Diamond, Topaz, Blue Topaz, 14k Gold, White Gold

Antique and Vintage Diamond Jewelry and Watches

Diamonds and antique 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 “Diamonds Are 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 the stone 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 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 diamonds 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.

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