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Diamond Solitaire Rings

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Ico & the Bird Fine Jewelry Spessartite Orange Garnet Diamond 18k Gold Ring
Located in Los Angeles, CA
Featuring a large orange, rough cut Fanta Orange Spessartite Garnet center stone and surrounded by diamonds, this ring was inspired by the reflections of the sun on ocean waves. Fea...
Category

2010s Artisan Diamond Solitaire Rings

Materials

Diamond, Garnet, 18k Gold

Cartier Magnificent 27carat Sapphire and Diamond Ring
Located in London, GB
Description A magnificent sapphire and diamond ring by Cartier c.2000s, centred with a beautiful octagonal blue Ceylon sapphire weighing 27.04ct set to each corner with a flat claw i...
Category

1990s Diamond Solitaire Rings

Materials

Diamond, Sapphire, Platinum

3.78 Carats Old European Cut Solitaire Diamond Engagement Ring
Located in Lancashire, Oldham
A superb 3.78ct Old European solitaire diamond engagement ring set in platinum. The centre stone is an OEC diamond which was the precursor to the brilliant cut diamond. Displaying ve...
Category

Early 20th Century Edwardian Diamond Solitaire Rings

Materials

Diamond, Platinum

Diamond 1.72 Carats Engagement Ring with Tapered Baguettes
Located in Beverly Hills, CA
DIAMOND AND PLATINUM ENGAGEMENT RING 1.72 CARATS Round Diamond Center Stone 1.72 carats J Color SI2 Clarity With GIA Certificate # 2213161067 Tapered Baguette Diamonds 0.25 ...
Category

Early 2000s Contemporary Diamond Solitaire Rings

Materials

Diamond, Platinum

Cartier, 4.21carat E VS1 Old Mine Cushion Cut Diamond Solitaire Ring, circa 1920
Located in London, GB
Description A beautiful old cut diamond solitaire ring by Cartier c.1920s, set with a wonderful bright and lively cushion shaped old mine brilliant cut diamond weighing 4.21cts and o...
Category

1920s Vintage Diamond Solitaire Rings

Materials

Diamond, Platinum

EGL 2.62cts Old European Cut Diamond Engagement Ring
Located in Miami, FL
This ring is crafted in solid Platinum, composed of exquisite Old European Cut Genuine Diamond 2.52 carats  H-I color & SI1Clarity). Complimented by (6) round-cut, prong-set, Genuine...
Category

1980s Art Deco Vintage Diamond Solitaire Rings

Materials

Diamond, Platinum

Hancocks 3.99 Carat Old Cushion Cut Sapphire in Platinum Half-Moon Diamond Ring
Located in London, GB
Beautiful sapphire and diamond ring by Hancocks, centred with an antique cushion cut Ceylon sapphire weighing 3.99cts claw set between half-moon shaped diamonds of F+ colour and VS+ ...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, Blue Sapphire, Platinum

Roman Malakov GIA Certified Cushion Old Mine Cut Diamond Pave Engagement Ring
Located in New York, NY
A classic engagement ring style showcasing a 4.68 carat cushion cut diamond center stone, set in a very thin, platinum band accented with diamonds. GIA certified the center diamond a...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Diamond, Platinum

Handcrafted Wyler Oval Cut Diamond Ring by Single Stone
Located in Los Angeles, CA
1.41ctw J/SI2 GIA certified Oval cut diamond bezel set in a handcrafted 18K yellow gold mounting. Ring is currently a size 6 and can be sized to fit. Our jewelry is made locally i...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

GIA Certified Diamond Platinum Ring by Siegelson New York
Located in New York, NY
A ring composed of a bezel-set cushion-cut diamond; mounted in platinum • 1 cushion-cut diamond, total weighing 1.14 carats • Measurements: ¼ x ¾ x 7/8 inch • Ring size: 5 3/4 Certi...
Category

2010s Diamond Solitaire Rings

Materials

Diamond, Platinum

I Flawless GIA Certified 4 Carat Emerald Cut Three Stone Engagement Ring
Located in Rome, IT
Antinori Fine Jewels is proud to offer this important and impressive 4.82 carat GIA certified Internally Flawless H Color Emerald cut diamond ring. This beautiful and rare three-sto...
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, White Diamond, Emerald, Platinum

One of a Kind White Geode with Diamonds and Sapphire Set in Gold and Silver
Located in New York, NY
Designer One of a kind white geode with Diamonds and Sapphire set in Gold and Silver is perfect to accent with any of your denim outfits. Ring Size: 7.25 ( Can be sized ) 18kt gold...
Category

21st Century and Contemporary Modern Diamond Solitaire Rings

Materials

Diamond, Sapphire, Geode, 18k Gold, Silver, Gold

Cushion Brilliant Diamond Engagement Ring 2.40 Ctw Center 2.05 Ct. F, VS1 GIA
Located in Honolulu, HI
This elegant engagement ring is in 14K white gold features a 2.05 ct. cushion brilliant cut diamond, color F and clarity VS1 with GIA diamond report. The diamond is set in four doub...
Category

21st Century and Contemporary Modern Diamond Solitaire Rings

Materials

Diamond, 14k Gold, White Gold

Platinum Marquise Solitaire Diamond Ring
Located in Miami, FL
Circa 1940s-1950s this superb Old-cut Marquise diamond of 2.96 carats is flanked with 0.20 carat tapered baguette diamond on each side, set on a handmade platinum mounting. The Old-c...
Category

1950s Vintage Diamond Solitaire Rings

Materials

Diamond, White Diamond, Platinum

EGL Certified 1.47 Carat Diamond Yellow Gold Solitaire Engagement Ring
Located in Stamford, CT
14k yellow gold engagement ring. 1.47 carat diamond center stone, in a six prong solitaire setting. EGL certified. 1 brilliant round cut diamond, H-I I approx. 1.47cts EGL Certif...
Category

Early 20th Century Diamond Solitaire Rings

Materials

Diamond, Yellow Gold, Gold, 14k Gold

GIA Certified Canary Diamond Ring 4.00 Carat Fancy Light Yellow 18 Karat Gold
Located in Carlsbad, CA
GIA Certified Fancy Light Brownish Yellow Diamond = 4.00 Carat Origin: Natural Color Distribution: Even Metal: 18K Yellow Gold GIA Report # 5276415339
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

GIA Certified 4.02 Carat Three-Stone Emerald Cut Trapezoid Platinum Ring
Located in Rome, IT
GIA Certified 4.02 Carat Three Stone Emerald Cut Trapezoid Platinum Ring the main stone weights 4.02 side diamond approx. 0.80 carat together
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Slice Yellow Sapphire Ring Set in Gold and Silver with Diamonds and Pearls
Located in New York, NY
Pretty Slice Yellow Pear shape Sapphire Ring set in Gold and Silver with Diamonds and Pearls around is bright and charming. Ring Size: 7 ( Can be sized ) 18Kt gold:2.32gms Diamond:...
Category

21st Century and Contemporary Artisan Diamond Solitaire Rings

Materials

Diamond, Pearl, Sapphire, Yellow Sapphire, 18k Gold, Gold, Silver

Handcrafted Bryn Old European Cut Diamond Ring by Single Stone
Located in Los Angeles, CA
3.04ctw Q-R/VVS2 GIA certified old European cut diamond set in a handcrafted 18K yellow gold mounting. Ring is currently a size 6 and can be sized to fit. Our jewelry is made local...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

0.49 Carat Tiffany & Co Lucida Diamond Platinum Engagement Ring
Located in London, GB
A beautiful platinum solitaire engagement ring by Tiffany & Co From the Tiffany & Co ‘Lucida’ collection, this ring is set with a 0.49 carat Lucida cut diamond mounted within four ...
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, Platinum

Chakra Diamond Ring in Diamond Set in Silver and Gold
Located in New York, NY
Sassy looking this Chakra Diamond Ring in diamond set in silver and gold is sweet. Ring size: 7 ( Can be sized ) 14kt gold: 2.7gms Diamond: 2.25cts Silver: 5.48gms
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Gold, 14k Gold, Silver

GIA Certified 0.80 Carat Oval Diamond Engagement Ring in White Gold Halo Setting
Located in Sherman Oaks, CA
Eytan Brandes' halo ring boasts a 0.80 carat clean, colorless diamond, oval-shaped and brilliant cut. We just had the stone certified and the GIA rates it D color (their highest col...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

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

Tiffany & Co. Solitaire Diamond Engagement Ring
Located in New York, NY
Authentic Tiffany & Co. engagement ring made in platinum set with a 0.32 carat round brilliant cut diamond, G color, VS1 clarity. Cut is graded Excellent and polish is graded as Very...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Platinum

GIA Certified 4.10 Carat Fancy Light Yellow Cushion Three Stone Diamond Ring
Located in Rome, IT
GIA Certified 4.10 Carat Fancy Light Yellow Cushion Three Stone Diamond Ring The main stone is a 4.10 carat amazing fancy yellow diamond with great luster performance and tone! The ...
Category

2010s Modern Diamond Solitaire Rings

Materials

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

Handcrafted Bryn Antique Cushion Cut Diamond Ring by Single Stone
Located in Los Angeles, CA
1.54ctw L/VS1 GIA certified antique Cushion cut diamond set in a handcrafted 18K yellow gold mounting. Ring is currently a size 6 and can be sized to fit. Our jewelry is made local...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Antique French Gold and Silver Old Cut Diamond Ring
Located in Firenze, IT
Ring adorned with an old cut diamond of approximately 1 carat. Frame in yellow gold and silver. Original case. French work. Size 8 1/4. Weight: 3.29 gr.
Category

1890s Napoleon III Antique Diamond Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Silver

Sybarite Jewellery Dancing Doll Ring Set 5.52 Carats Blac Diamonds 18 Karat Gold
Located in London, GB
Sybarite Jewellery is a London-based luxury brand crafting outstanding pieces, incomparable both in design and in execution. Spearheaded by founder Margarita Prykhodko, a former arch...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Diamond, Pearl, Sapphire, Gold, 18k Gold, Mixed Metal

Old European Cut 2 Carat Engagement Solitaire Gold Ring
Located in Rome, IT
A gorgeous old european cut diamond with broad facets and so much life! This stone has impeccable proportions and is eye clean to the nakes eye! The main stone is a gorgeous and hig...
Category

Late 20th Century Art Deco Diamond Solitaire Rings

Materials

Diamond, White Diamond, Gold, 14k Gold

Flawless GIA Certified 2 Carat Emerald Cut 'main stone' Diamond Ring
Located in Rome, IT
GIA Certified 2.65 Carat Emerald Cut Diamond Ring the main stone is F color FLAWLESS clarity
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Vintage Art Deco Revival Emerald Diamond Ring
Located in Sale, Cheshire
A stunning 1970s Art Deco Revival solitaire ring set with a central 1.28ct emerald flanked by diamond-set stepped shoulders. The principal stone is certified Zambian, and displays ex...
Category

20th Century Art Deco Diamond Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

GIA Certified 10 Carat Cushion Cut Diamond Platinum Ring VS2 Clarity G Color
Located in Rome, IT
This spectacular diamond ring has been handmae by Antinori Fine Jewels. This 10 carat GIA certified G VS2 cushion cut excellent diamond measuring - 13.78 x 11.10 mm is custom set in ...
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, Platinum

Flawless GIA Certified 6 Carat Emerald Cut Diamond Ring
Located in Rome, IT
We personally hand picked this breathtaking Gia certified 6 carat natural GIA certified Emerald cut diamond in the center. This piece was Hand made in Italy in 18 carats white gold...
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Green Tourmaline, Diamond and Platinum Ring
Located in London, GB
A green tourmaline and diamond ring, set with a 3.09ct cushion-cut green tourmaline, in a four, double claw setting, with bullet-cut diamonds, in the shoulders, with a total weight o...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, Tourmaline, Platinum

AGL Certified 2.55 Carat Natural Sapphire & Diamond Ring Set in Platinum
Located in Chicago, IL
Designed in brightly polished platinum, this beautiful diamond and sapphire ring features a center-set cushion cut sapphire with a weight of 2.55 carat and exhibits an intense blue c...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, Sapphire, Platinum

18 Karat Yellow Go GIA Certified G,SI1 Diamond Solitaire Engagement Ring
Located in New York, NY
18 Karat Yellow Gold GIA , G si 1, Diamond Solitaire Engagement Ring, Tiffany Designer Thomas Kurilla continues in his, "Less is more " style of design. This ring has subtle lines t...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, Yellow Gold, 18k Gold

Alex Jona 9.9 Carat Tanzanite White Diamond Gold Solitaire Cocktail Ring
Located in Torino, IT
Alex Jona one-of-a-kind collection, hand crafted in Italy, 18 karat white gold solitaire ring, centering a 9.92 carat square cut Tanzanite, embraced on both sides by two rows of whit...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

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

4.56tcw 14K Colombian Emerald, Emerald Cut & Diamond Accent Ring
Located in Jupiter, FL
When simple, meets elegant! a beautiful 4.50-carat natural Colombian emerald, with a medium green color and very good luster, is set in a bezel set setting. The setting is very uniqu...
Category

2010s Modern Diamond Solitaire Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

1 Carat Solitaire Black Diamond Traditional Ring/Band 14 Karat Yellow Gold
Located in Scarsdale, NY
1 Carat Solitaire Black Diamond Traditional Ring/Band 14 Kt Yellow Gold Size 6.5 Solitaire round Black diamond approximately 1 ct and White diamond, approximately 0.75 ct White ...
Category

2010s Diamond Solitaire Rings

Materials

Diamond, Black Diamond, Gold, 14k Gold, Yellow Gold

1 Carat Solitaire Emerald Cut Black Diamond Ring/Band 18 Karat White Gold
Located in Scarsdale, NY
1 Carat + Solitaire Black Diamond Emerald cut shape Traditional Ring/Band 18 Karat White Gold Size 5 Solitaire Emerald cut Black diamond approximately 1 Carat or higher and Whi...
Category

2010s Diamond Solitaire Rings

Materials

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

Princess Diamond Solitaire Engagement Ring, 14K White Gold .60 Ct Diamond Ring
Located in Austin, TX
Solitaire Diamond Engagement Ring with Princess cut Diamond Center The solitaire engagement ring is a classic design the focusses on the center diamond. This center diamond is a .62 ...
Category

21st Century and Contemporary Modern Diamond Solitaire Rings

Materials

Diamond, White Gold

Yianni Creations Aquamarine Fine Silver 24 Karat Gold Bracelet and Ring Set
Located in Astoria, NY
Stunning Yianni Creations Midas Collection set of bracelet and ring handmade from fine silver 950 purity plated with palladium to resist against elements. The liquid edges are plated...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, White Diamond, Aquamarine, Gold Plate, Yellow Gold, Palladium, ...

Yianni Creations Topaz and Diamond Silver and 24 Karat Gold Adjustable Band Ring
Located in Astoria, NY
Yianni Creations adjustable ring all handmade in Greece for an international jewelry show. This artisan ring is a modern variation on the classic diamond rosetta ring. This geometric...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Topaz, Diamond, White Diamond, Gold Plate, Yellow Gold, Silver, Sterling...

Yianni Creations Blue Topaz and Diamond Fine Silver 24 Karat Gold Two Tone Ring
Located in Astoria, NY
Presenting Yianni Creations - Ammos Collection fully handcrafted ring from Fine Silver plated with Palladium to resist the elements. This geometric-shaped ring features 1.60 Carat Lo...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Blue Topaz, Diamond, White Diamond, Topaz, Palladium, Silver, Sterling S...

Certified Red Spinel and Diamond Cocktail Ring 18 Karat Gold
Located in Brunswick, ME
Stunning and classic natural untreated Burma cushion-cut vivid red spinel weighing 2.21 carats GFCO certified. Accented by 6 baguette diamonds weighing 0.57ct, G in color, and VS in ...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

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

1.60 Carat Vintage Natural Emerald Ring Diamond Accents 14 Karat Yellow Gold
Located in Brunswick, ME
Natural Colombian emerald emerald cut vintage solitaire ring 14K yellow gold with diamond accents. Emerald approx. weight 1.40 carats, the emerald measurements are 7.69x5.83x4.35mm. ...
Category

Mid-20th Century Contemporary Diamond Solitaire Rings

Materials

Diamond, Emerald, 14k Gold

Platinum Art Deco Blue Sapphire Diamond Engagement Ring
Located in Brunswick, ME
This is a lovely Vintage Art Deco royal blue Sapphire diamond Platinum Engagement Ring. It has a great design and holds Approx. 0.85 carat(or bigger), royal blue sapphire oval cut in...
Category

1930s Art Deco Vintage Diamond Solitaire Rings

Materials

Diamond, Blue Sapphire, Platinum

Topaz and Diamond Estate Platinum Cocktail Ring
Located in Brunswick, ME
Estate sparkling classic cocktail natural brownish orangish topaz and diamond ring platinum 900 Main stone: Untreated Natural Topaz Oval Cut 10.46 carat Side stone: Diamond 0.32 cara...
Category

21st Century and Contemporary Diamond Solitaire Rings

Materials

Diamond, Topaz, Imperial Topaz, Platinum

Estate Platinum Natural Colombian Emerald and Diamonds Solitaire Ring
Located in Brunswick, ME
Mounting Is Custom Made of Solid Platinum Center Fine Natural Colombian Emerald 1.85 Carat Vivid Medium Green Side: Natural princes Cut Diamonds 0.75 Carat Clarity VS1 Color F/G We...
Category

Late 20th Century Art Deco Diamond Solitaire Rings

Materials

Diamond, Emerald

Emerald Diamond Yellow Gold 18 Karat Engagement Ring
Located in Brunswick, ME
Classic engagement ring that is centered with an natural emerald-cut emerald from Colombia with vibrant medium AAA green color, VS in clarity, weighing 0.77 carat and four diamonds w...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Square Cut Emerald and Diamond Ring Gold
Located in Brunswick, ME
This is a Gorgeous Colombian Emerald and Diamond Engagement Ring set with a square cut emerald weighing 1.70 carats (7.1x7.2mm), within six round brilliant cut diamonds H/SI1 weighin...
Category

21st Century and Contemporary Art Deco Diamond Solitaire Rings

Materials

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

3.76 Carat Sapphire Diamond Engagement Ring 18 Karat White Gold
Located in Brunswick, ME
3.76 Carat Estate Sapphire & Diamond Wedding Engagement Ring 18k White Gold Primary Stone: Natural Sapphire Sapphire Weight: 3.46 Carats Shape or Cut Sapphire: Trillion Average Colo...
Category

Early 2000s Contemporary Diamond Solitaire Rings

Materials

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

Vintage 0.75 Carat Natural Diamond Engagement Ring 18 Karat Gold & Platinum
Located in Brunswick, ME
Beautiful sparkling Vintage 0.75 Carats Round Brilliant Cut Natural Diamond Engagement Solitaire Ring 18K Gold & Platinum Primary Stone: Natural Diamond Shape or Cut: Round Brillian...
Category

Late 20th Century Contemporary Diamond Solitaire Rings

Materials

Diamond, White Diamond, Gold, 14k Gold, Platinum

Fine Natural Colombian Emerald Pave Diamond Engagement Ring
Located in Brunswick, ME
A Fine Natural Colombian Emerald Pave Diamond Engagement Ring 18K White Gold Center High Quality Natural Colombian Emerald, Emerald Cut 0.50 Carat , Vivid Medium intense Green Side N...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

Natural Green Colombian Emerald Diamond Ring 18 Karat
Located in Brunswick, ME
An Antique Style Emerald and Diamond Gold Ring Inspire on the early 1900's The 18K yellow gold ring is bezel-set with a pear-shaped 0.85 carat natural Colombian emerald medium green ...
Category

21st Century and Contemporary Edwardian Diamond Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

4.70 Carat Round Colombian Emerald Diamond Engagement Ring 18 Karat Gold
Located in Brunswick, ME
Classic Solitaire Colombian round cut emerald engagement ring diamond accented. Center; Fine brilliant natural green Colombian emerald round cut 4.20 carat, measurement 10.40mmX10.4...
Category

21st Century and Contemporary Art Nouveau Diamond Solitaire Rings

Materials

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

Colombian Emerald Diamonds Solitaire Ring White Gold 18 Karat
Located in Brunswick, ME
Emerald and Diamonds Ring Mounting Is Custom Made of Solid 18K W.G Center Natural Colombian Emerald 1.00 carat Vivid Medium Green Side Diamonds 0.20 Cts Clarity VS1 Color F/G We...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

7.73 Carat Certified Fine Natural Colombian Emerald and Diamond 18K Ring
Located in Brunswick, ME
Stunning Extra Fine Natural Colombia Emerald, Diamond and 18K white Gold handmade Engagement Ring from our Workshop. Fine Natural Colombian Emerald octagonal faceted 5.73 Carats 12.6...
Category

21st Century and Contemporary Contemporary Diamond Solitaire Rings

Materials

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

Engagement Diamond Ring with Diamond Accents 14 Karat White Gold
Located in Brunswick, ME
Engagement solitaire ring with diamond accents; excellent condition. White gold bezel set center round brilliant cut diamond 4.4mm 0.36 carat J-SI1. Set on the side of the band with...
Category

2010s Contemporary Diamond Solitaire Rings

Materials

Diamond, White Diamond, White Gold, 14k 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.