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Diamond Dome Rings

40
2,467
7
to
282
1,578
633
3
3.25
3.5
3.75
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4.25
4.5
4.75
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5.25
5.5
5.75
6
6.25
6.5
6.75
7
7.25
7.5
7.75
8
24
939
1,503
6
43
40
36
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31
1,461
968
45
2,189
1,618
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Gemstone: Diamond
Yianni Creations London Blue Topaz Diamond Fine Silver and 24 Karat Gold Ring
Located in Astoria, NY
Yianni Creations Fine Silver with an overlay of 24 Karat Yellow Gold 3.5+ microns, features a 1.55 Carat London Blue Topaz accompanied by a brilliant-cut Diamond weight of 0.03 Carat...
Category

21st Century and Contemporary Contemporary Diamond Dome Rings

Materials

Diamond, White Diamond, Topaz, Blue Topaz, 24k Gold, Gold Plate, Yellow ...

Michael Kneebone Cabochon Emerald Rose Cut Diamond 18k Gold Bombe Ring
Located in Austin, TX
A cabochon emerald is featured in this elegant Bombe ring. The emerald (origin: Zambia) is a brilliant "Prell Shampoo" color and is well cut and polished. It is complimented by ros...
Category

2010s Contemporary Diamond Dome Rings

Materials

Diamond, Emerald, 18k Gold

18k Yellow Gold Matte Figural Frog Ring with Bezel Set Diamonds
Located in Southport, US
18k yellow gold ring. This beautiful ring is a figural frog, matte finished with high polished highlights, and set down the back with a cluster of bezel set, round brilliant cut diam...
Category

20th Century Contemporary Diamond Dome Rings

Materials

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

Dilys' Gem-Grade Aquamarine & Diamond Ring in 18K Gold
Located in Hong Kong, HK
Alll-natural gem-grade, transparent Aquamarine with unique 'birthmarks' within its globe-like form, set in a flowing and lively silhouette with 18K black and white gold. Set by the H...
Category

2010s Contemporary Diamond Dome Rings

Materials

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

18k Rose Gold 2.72ctw Diamond Pave Mushroom Dome Ring
Located in Boca Raton, FL
Material: 18k Yellow Gold Diamond Details: Approx. 2.72ctw of round cut Diamonds. Diamonds are G/H & Fancy Yellow in color and VS in clarity Size: 6.5  Measurements: 30mm x 31mm x 31...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

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

10 carat Oval Aquamarine Graduated colors Aqua Diamond Covered 18k Gold ring
Located in New York, NY
FERRUCCI 10carat Oval Blue Aquamarine in a Dome, graduated colors Aquamarine and Diamonds, 18k white Gold ring, with an approximate carat weight of 2.80 carats. Unique work of art, c...
Category

2010s Art Nouveau Diamond Dome Rings

Materials

Diamond, Aquamarine, 18k Gold

Theo Fennell White Gold Whisper Diamond & Aquamarine Ring
Located in London, GB
A fashionable Theo Fennell diamond and aquamarine ring from the Whisper collection. The ring comprises of a cabochon cut aquamarine in a rub over setting, complemented by 3 rows of r...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

1950s Retro Diamond 18 Karat Yellow Gold Scale Dome Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle's head hallmark and platinum dog's head hallmark. Dome ring, this important retro ring is set on its top, on platinum, with an antique brilliant-c...
Category

1950s Retro Vintage Diamond Dome Rings

Materials

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

9.48 Carat GRS Certified Burma No Heat Spinel and White Diamond Gold Ring
Located in Hong Kong, HK
9.48 Carat GRS Certified Burma No Heat Spinel and White Diamond Gold Ring: A gorgeous ring, it features a stunning GRS certified Burmese unheated cushion-cut spinel weighing 9.48 ca...
Category

2010s Modern Diamond Dome Rings

Materials

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

Vintage Chaumet Diamond Liens Bombe Ring Set in 18k White Gold
Located in London, GB
A beautiful chunky vintage Chaumet diamond ‘Liens’ ring set in 18k white gold. From the current ‘Liens’ collection the ring is composed of two domed white gold bands soldered secur...
Category

2010s Modern Diamond Dome Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Chaumet Liens Diamond Criss Cross Band Ring in 18 Karat White Gold
Located in Tampa, FL
Chaumet Liens Diamond Criss Cross Band Ring in 18 Karat White Gold Set with approximately .40 carats of G/H color VS clarity round brilliant cut diamonds in 18 karat white gold. F...
Category

2010s Modern Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold

Italian 18 Karat Yellow Gold Persian Turquoise and Diamond Ring Made in Italy
Located in Troy, MI
People the world over have revered turquoise as a good luck stone for centuries. Blue as the summer sky or a robin’s egg, this stone has inspired many mystical associations. Made in ...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Diamond, Turquoise, Gold, 18k Gold

Vintage Bvlgari Eighteen Karat White Gold Dome Diamond Cocktail Ring
Located in New York, NY
Eighteen karat white gold dome ring vintage Bvlgari cocktail cluster ring Diamonds weighing 0.40 carats Finger size 5.5 Top of the ring measures 14 millimeter BVLGARI is famous for i...
Category

1990s Italian Contemporary Diamond Dome Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Sybarite Royal Jubilee Ring in White Gold with White Diamonds and Pink Quartz
Located in London, GB
Inspired by the delight of a jubilee, this playful design is a true joy. 24gr white gold (18K), 4.41cts white diamonds, pink quartz. Uk O Size, USA 7 1/4 Size
Category

2010s Art Deco Diamond Dome Rings

Materials

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

Cartier Swerve-Design 6.20 Cts. D/E VVS1 Diamond Cocktail Ring, 18K White Gold
Located in New York, NY
A Cartier Swerve-Design 6.20 cts. D/E VVS1 Diamond Cocktail Ring made in 18K White Gold, with French Marks. The total weight of the ring is 18.63 grams. The ring size is US 6.50.
Category

20th Century Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold

18 Karat White Gold Sapphire and Diamond Ring
Located in Palm Springs, CA
Vintage 18 karat white gold ring, with 12 brilliant diamonds for a total of 1.4 karats, and one large central sapphire, Italy 1970s Ring size US 7
Category

Mid-20th Century Diamond Dome Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

French 1950s Diamonds 18 Karat Yellow Gold Platinum Openwork Flower Pattern Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle head hallmark and platinum, dog head hallmark. Delightful dome ring, it is openworked on its top and set with diamonds on a floral pattern. The on...
Category

1950s Retro Vintage Diamond Dome Rings

Materials

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

1930s Art Deco Sugarloaf Turquoise Lapis Lazuli Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum. Lovely domed art deco ring, it is adorned on its top with a sugar loaf turquoise surrounded by rose- cut diamonds, and adorned all around with lapis lazuli cabochon...
Category

1930s Art Deco Vintage Diamond Dome Rings

Materials

Lapis Lazuli, Diamond, White Diamond, Turquoise, Platinum

18kt Yellow Gold and Diamond 0.63ct Dome Ring
Located in New York, NY
A classic dome style 18 karat yellow gold high polished dome ring. The center of the ring has a single row of round brilliant diamonds. Total diamond weight 0.63 carats Ring size 7.5...
Category

1980s Retro Vintage Diamond Dome Rings

Materials

Diamond, 18k Gold, Yellow Gold

Two Tone 18K Gold Ring with Pavé Set Round Brilliant Cut Diamonds, 2.64 Carats
Located in New York, NY
A custom ring made in 18K Two Tone with Yellow & White Gold and a layout of Pavé set Round Brilliant Cut Diamonds. Forty Round Brilliant Cut Diamonds weigh 2.64ct, diamond color gra...
Category

1980s Vintage Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Rubies, Diamonds, 14 Karat Rose Gold and Silver Retrò Ring
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). Beautiful retrò ring in 14 karat ...
Category

1960s Retro Vintage Diamond Dome Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold, Silver

Tiffany & Co. Blue and Green Enamel "Paillonné" Ring
Located in Lakewood, NJ
Diamond and blue and green Paillonné enamel 18k yellow gold twist ring by Tiffany Co. Ring size 5-1/2. No. TMWJ-4214
Category

1970s Vintage Diamond Dome Rings

Materials

Diamond, 18k Gold, Enamel

1970s Mediterranean Coral Diamond Gold Dome Ring
Located in Berlin, DE
This ring in shrimp design was fashioned in the 1970's in Italy. Carved Mediterranean coral accented by 19 pavé diamonds weighing approximately 0,39 carats. Mounted in 14K white gol...
Category

Late 20th Century Diamond Dome Rings

Materials

Coral, Diamond, 14k Gold, White Gold

Vintage 1960s Sapphire and Diamond White Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
This impressive vintage 0.70 carat sapphire and 0.78 carat diamond, 18 karat white gold dress ring; part of our diverse vintage jewelry collections. This fine and impressive sapphir...
Category

1960s Vintage Diamond Dome Rings

Materials

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

Black & White Diamond Flower Cocktail Ring
Located in Toronto, CA
Black & White Diamond Flower Ring 18kt White Gold 277 Round Brilliant Cut Diamonds= 3.01ct 510 Black Diamonds= 1.76ct
Category

21st Century and Contemporary Diamond Dome Rings

Materials

White Diamond, Black Diamond, 18k Gold

21st Century 18 Karat Gold Sapphire Diamond and Tahitian Pearl Cocktail Ring
Located in Palermo, Italy PA
Masterfully created entirely by hand, a sparkling 2.96 carats of pink sapphires and 1.59 carats of diamonds and a large 9.8-carat grey Tahitian pearl feature on this whimsical cockta...
Category

21st Century and Contemporary Contemporary Diamond Dome Rings

Materials

Diamond, Brown Diamond, Pearl, Sapphire, Gold, 18k Gold, Rose Gold

Diamond Dome Gold Ring
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). A dome of shiny diamonds are encr...
Category

Late 20th Century Retro Diamond Dome Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

18 Karat Yellow Gold Diamond Flowers Ring
Located in Palm Springs, CA
Vintage ring with 18 karat yellow gold band, and diamond with multicolor stone flowers, Italy 1970s Ring size US 5.5
Category

Late 20th Century Diamond Dome Rings

Materials

Diamond, 18k Gold

Antique Ladies Gold Ring, with Sapphires and Diamonds
Located in Berlin, DE
Antique ladies gold ring, with sapphires and diamonds. The central diamond solitaire has about 0.4 carats. US ring size about 6 1/2. Including certificate of authenticity.
Category

20th Century Diamond Dome Rings

Materials

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

Oscar Heyman Ruby and Diamond Ring in 18K Gold
Located in Houston, TX
Oscar Heyman ring composed of 18K yellow gold, rubies, and diamonds. The featured oval shaped ruby is 1.68 carats, and is accented by calibré cut rubies that total 2.41 carats. Add...
Category

1990s Diamond Dome Rings

Materials

Diamond, Ruby, 18k Gold

1970s Diamond White and Twisted Yellow Gold Dome Ring
Located in Miami Beach, FL
1970s 14K gold dome ring with diamonds set in white gold accented by yellow gold twisted edges. There is approximately 1 carat of diamonds in the ring. Size: 6 1/4. Slight scratche...
Category

1970s Vintage Diamond Dome Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

18k White Gold Dome Ring with Central Morganite and White and Brown Diamonds
Located in Bilbao, ES
Multifaceted 25ct Morganite with Brown and white Diamonds in 18k white gold ring Irama Pradera is a vdynamic and outgoing designer from Spain that searches always for the best gems...
Category

21st Century and Contemporary Contemporary Diamond Dome Rings

Materials

Brown Diamond, Morganite, Diamond, White Gold

Chaumet White Gold Diamond Dress Band Dome Ring
Located in London, GB
An 18k white gold diamond dress ring by Chaumet. The ring features a round brilliant cut diamond set crossover pattern. The diamonds have a total weight of approximately 1.20ct, G+ c...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold

Diamond Flower Dome White Gold Crossover Band Ring
Located in Miami Beach, FL
18k White gold flower or starburst diamond dome ring with a crossover notched band. US Ring size 5
Category

20th Century Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold

11.05 Carat Sugarloaf Cut Tanzanite and Diamond Engagement Ring
Located in Bangkok, Thailand
A stunning, natural sugarloaf shaped Tanzanite ring, with Diamonds set in 18K white gold. The stone is transparent, with no inclusions at all, the stone is a strong/vivid blue witho...
Category

21st Century and Contemporary Modern Diamond Dome Rings

Materials

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

1.20 Carat Diamond Sapphire Art Deco Platinum Dome Ring
Located in Stamford, CT
Original Art Deco 1930's diamond and sapphire ring. Pierced geometric top set with Old European cut diamonds and calibre cut sapphires in a platinum dome setting. 1 Old European cu...
Category

Mid-20th Century Diamond Dome Rings

Materials

Sapphire, Diamond, Platinum

Ladies Dome Ring, 18 Karat Solid Gold with White Diamonds
Located in Berlin, DE
Ladies Dome Ring, 18 Karat Gold with white Diamonds. Very high quality workmanship and high quality diamonds. US ring size: 7 Including certificate of authenticity.
Category

Early 2000s Modern Diamond Dome Rings

Materials

White Diamond, 18k Gold, Yellow Gold

53.26 Carat Special Cut Amethyst with Diamond Pavé Olive Leaves Detail Gold Ring
Located in Bangkok, TH
53.26 Carat Special-Cut Amethyst Ring in 18K Gold with Diamond Pavé Olive Leaves Detail Amethyst: 53.26cts. Diamond: 1.99ct. Gold: 18K Gold 19.438g. Ring size: 55 / US 7 Please let...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Amethyst, Diamond, Gold, 18k Gold

1.50 Carat Diamond Invisible Set Gold Band Ring
Located in Stamford, CT
Invisible set three row princess cut diamond 1.50ct domed band ring in 18k yellow gold. 42 princess cut diamonds G-H VS approximate 1.50 carats Size 8 ½ and sizable 18k Yellow Gold ...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Diamond, 18k Gold, Yellow Gold, Gold

Coral, Diamond, and Emerald Cabochon Cocktail Ring in 18k Yellow Gold
Located in Los Angeles, CA
Gorgeous coral oval, white diamond round, and cabochon emerald cocktail ring. Handmade in 18k yellow gold. Ring size 6.5.
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Coral, Diamond, Emerald, Yellow Gold

18K Yellow Gold Cultured Tahitian Pearl Diamond and Ruby Ring
Located in Houston, TX
Ring composed of 18K yellow gold featuring a cultured Tahitian pearl accented by diamonds and rubies. The pearl measures 13.9 mm. rubies total 2.60 carats, and diamonds total 3 cara...
Category

1990s Diamond Dome Rings

Materials

Cultured Pearl, Pearl, Diamond, Ruby, 18k Gold, Yellow Gold

Natural 5.75 Carat Diamond Multi Layer Dome Ring Solid 18k White Gold Jewelry
Located in IN
Item Code:- SER-2134C Gross Weight :- 9.47 gm 18k White Gold Weight :- 8.32 gm Diamond Weight :-5.75 ct. Ring Size: US 7 & All ring size available
Category

21st Century and Contemporary Modern Diamond Dome Rings

Materials

Diamond, White Gold, 18k Gold

Monumental Lapis &diamond Ring
Located in New York, NY
Oversize Lapis Ring with Diamond Accents
Category

1980s Vintage Diamond Dome Rings

Materials

Diamond, Lapis Lazuli, 14k Gold

18K White Dome Star Ring
Located in Dallas, TX
Playful dome ring with scattered Round Diamonds in star motif. Set in 18k White Gold. 23rd diamonds Size 7.25 Marked 18K 750
Category

1980s Modern Vintage Diamond Dome Rings

Materials

Diamond, 18k Gold, White Gold

5.70 Ct. Peridot, Diamond, Yellow, White Gold Florentine Inspired Cocktail Ring
Located in Los Angeles, CA
A velvety, grass-green, cushion cut peridot is showcased in this beautiful, Florentine style ring. The center peridot is set horizontally, surrounded by an intricately-pierced, white...
Category

21st Century and Contemporary Italian Artisan Diamond Dome Rings

Materials

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

Diamond Yellow Gold 18K Ring, 1950s
Located in Geneva, CH
Diamond and Yellow Gold 18K Ring. Circa 1950.
Category

1950s Retro Vintage Diamond Dome Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Retro Gold 5.5 Carat Natural Dark Blue Sapphire & Diamond Cocktail Gem Ring 1950
Located in Los Angeles, CA
Retro 14k Yellow Gold 5.5 Carat Natural Dark Blue Sapphire & Diamond Cocktail. The ring weighs 9.6 grams, the ring is a size 5.75. The centerstone is an approximately 4.30 carat Na...
Category

1950s Retro Vintage Diamond Dome Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold

Boucheron "Hans the hedgehog" Rubies Black Diamond 18 Carats Rose Gold Ring
Located in Paris, FR
Amazing Boucheron "Hans the hedgehog" ring in pink gold, stylizing a hedgehog, the eyes punctuated with rubies and the muzzle enhanced with a black diamond. Signed Boucheron and num...
Category

2010s Contemporary Diamond Dome Rings

Materials

Black Diamond, Ruby, 18k Gold, Rose Gold

6.50 Carat Natural Black Cabochon Opal Diamond Platinum Ring
Located in Stamford, CT
Opal and diamond ring. Translucent silvery black natural oval opal with flashes of green, blue, yellow and orange in a platinum setting with 6 emerald cut accent diamonds. 1 oval c...
Category

1920s Vintage Diamond Dome Rings

Materials

Diamond, Opal, Platinum

Faye Kim 18 Karat Gold Moonstone and Diamond Ring
Located in Westport, CT
Considered to be a stone of inner growth and strength, this round rainbow moonstone with its two side diamonds has been set by designer Faye Kim in 18K gold* and reflects a bluish, m...
Category

2010s Contemporary Diamond Dome Rings

Materials

Diamond, Moonstone, Gold, 18k Gold

Sonia B. 14 Karat Yellow Gold Diamond Starfish Cocktail Ring
Located in Baltimore, MD
Sonia B. 14 Karat Yellow Gold Diamond Starfish Cocktail Ring Metal: 14k yellow gold Weight: 20.07 grams Diamonds: Approx. .40 CTW G VS round diamonds Size: 8 (US) Top: 20 x 23.5 Sig...
Category

21st Century and Contemporary Contemporary Diamond Dome Rings

Materials

Diamond, Yellow Gold

Antique Art Deco Diamond and Platinum Dome Ring
Located in Denver, CO
Crafted from platinum, this early Art Deco era ring sparkles in an openwork design with four Old Mine cut diamonds surrounding a larger Old European cut diamond center stone measurin...
Category

Early 20th Century Art Deco Diamond Dome Rings

Materials

Diamond, Platinum

Cartier 18 Carat Gold and Baguette Cut Diamond Band Ring
Located in Amsterdam, NL
An 18 carat gold dome ring with baguette cut diamonds (app. 1.00 carat in total) rails set sunken into the ring, signed and numbered: Cartier, 953796. weight: 6.87 grams ring size: ...
Category

1990s Diamond Dome Rings

Materials

Diamond, Gold, 18k Gold

1.31 ct. t.w. Diamond 18k White Gold Art Deco Inspired Dome Wide Band Ring
Located in Los Angeles, CA
The cascading ridges of pave set diamonds on this gorgeous dome ring create a truly eye-catching visual effect! Set with 92 round brilliant cut diamonds, this bold 18k white gold thi...
Category

21st Century and Contemporary American Artisan Diamond Dome Rings

Materials

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

Bonheur Ring, Pink Topaz and Peridot and Diamond Yellow Gold Domed Ring
Located in New York, NY
The BONHEUR Ring: 18kt Yellow Gold Domed Ring with faceted pink topaz cut center stone and faceted oval Peridots and round Diamonds. This ring is available in in any color stone co...
Category

21st Century and Contemporary Diamond Dome Rings

Materials

Diamond, Peridot, Topaz, 18k Gold, Yellow Gold

Diamond Coral 18 Karat Yellow Gold Dome Vintage Ring
Located in Boca Raton, FL
Beautiful diamond and coral dome ring handcrafted in 18 karat yellow gold. The ring features 26 round brilliant cut diamonds weighing approximately .78 carat total weight and graded ...
Category

Mid-20th Century Unknown Contemporary Diamond Dome Rings

Materials

Coral, Diamond, 18k Gold, Yellow Gold

Rubies, Enamel, Diamonds, 18 Karat White Gold Ring
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). Beautiful ring in 18 kt white gold ...
Category

1970s Italian Retro Vintage Diamond Dome Rings

Materials

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

Gold and Diamonds French Vintage Ring
Located in Saint-Ouen, FR
A lovely vintage ring, made in France circa 1950. Made in yellow gold 18k and set with approximately 1 carat of diamonds. The dimension . diameter of front is 22mm. Ring size 54 or 7...
Category

1950s Vintage Diamond Dome Rings

Materials

Diamond, Gold, 18k 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 “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 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 vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.

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