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Diamond Watches

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Tiffany & Company 1920s Platinum Diamond and Onyx Ladies Bracelet Watch
Located in Chicago, IL
Circa 1920s Tiffany & Company Ladies Platinum Diamond and Onyx Bracelet Watch, the watch itself measures 22 X 14 M.M. and is a 2 piece Platinum case with hinged back and hand engrave...
Category

1920s Art Deco Vintage Diamond Watches

Materials

Diamond, Onyx, 18k Gold, Platinum

Van Cleef & Arpels Plique a Jour & Paillonne Enamel Watch
Located in New York, NY
VAN CLEEF & ARPELS Plique a Jour & Paillonne Enamel Watch 18k white gold limited edition #4/22 watch, set with diamonds and enamel on pink leather strap. Signed “Van Cleef & Arpels”;...
Category

1990s Diamond Watches

Materials

Pink Diamond, 18k Gold

Baume + Mercier .75 Carat Diamond Yellow Gold Covered Ladies Wristwatch
Located in Stamford, CT
1950's hand textured 14k gold covered ladies watch with diamond accents set in 14k yellow gold 32 diamonds, approx. .75cts Length: 31.62mm Width: 18.05mm Band width at case: 15.05m...
Category

Mid-20th Century Diamond Watches

Materials

Diamond, Gold, 14k Gold, Yellow Gold

Audemars Piguet One of One Colombian Emerald Diamond Watch
Located in New York, NY
Estate ultra rare original. One made for an overseas Royal family. Over 29.00 Carats of Colombian gem emeralds and natural diamonds. 18k Gold Please inquire for details.
Category

19th Century Antique Diamond Watches

Materials

Diamond, Emerald, 18k Gold

TAG Heuer Stainless Steel Diamond Alter Ego
Located in Scottsdale, AZ
Movement: quartz Function: hours, minuets, seconds Case: 29mm round case with factory diamond bezel Dial: blue sunburst dial Band: Tag Heuer stainless steel bracelet, deployment clas...
Category

21st Century and Contemporary Diamond Watches

Materials

Diamond, Stainless Steel

Vintage 2 Carat Diamond and Platinum Thin Watch
Located in Cincinnati, OH
This watch has a slender, sleek design Approximately 2 carats total diamond weight, 108 diamonds ranging in size from approximately .01 to .03 carat each 6 inches long Platinum Watc...
Category

Mid-20th Century Art Deco Diamond Watches

Materials

Diamond, Platinum

Vintage Diamond and Platinum Watch on Ribbon
Located in Cincinnati, OH
This gorgeous unique art deco antique watch is truly one-of-a-kind!! Approximately 2.5 total diamond weight (estimated) Platinum watch with black adjustable ribbon band with safe...
Category

Mid-20th Century Diamond Watches

Materials

Diamond, Platinum

DeLaneau 18 Karat Yellow Gold and Diamond Watch with Diamond Bows
Located in New York, NY
DeLaneau was founded by a woman in 1949 in Switzerland. They are one of the first watch companies to devote their entire collection to ladies timepieces. The face of this 18 karat y...
Category

1990s Contemporary Diamond Watches

Materials

Diamond, 18k Gold, Yellow Gold

Bvlgari 18 Karat Tri-Color Gold Serpenti Tubogas Diamond Bracelet Watch
Located in New York, NY
Merging two of the most iconic symbols of Bvlgari design, the Serpenti Tubogas watch coils the sinuosity of the snake with the contemporary soul of tubogas. Evoking both the sensual ...
Category

2010s Contemporary Diamond Watches

Materials

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

DeLaneau 18 Karat Gold Diamond and Multicolored Sapphires Heart Shaped Watch
Located in New York, NY
DeLaneau was founded by a woman in 1949 in Switzerland. They are one of the first watch companies to devote their entire collection to ladies timepieces. The face of this 18 karat y...
Category

Late 20th Century Contemporary Diamond Watches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Delaneau 18 Karat Yellow Gold and 3.10 Carat Diamond Bracelet Watch
Located in New York, NY
DeLaneau was founded by a woman in 1949 in Switzerland. They are one of the first watch companies to devote their entire collection to ladies timepieces. The dial of this 18 karat ye...
Category

1990s Contemporary Diamond Watches

Materials

Diamond, 18k Gold, Yellow Gold

DeLaneau 18 Karat Yellow Gold Diamond and Blue Sapphire Bracelet Watch
Located in New York, NY
DeLaneau was founded by a woman in 1949 in Switzerland. They are one of the first watch companies to devote their entire collection to ladies timepieces. The face of this 18 karat y...
Category

1990s Contemporary Diamond Watches

Materials

Diamond, Blue Sapphire, 18k Gold, Yellow Gold

Bvlgari 18 Karat Rose Gold Diamond Serpenti Misteriosi Secret Bracelet Watch
Located in New York, NY
In a tribute to its spirit animal, Bvlgari captures the power of seduction in the Serpenti Misteriosi Secret Watch, camouflaging sensuality and temptation with a hypnotic design. Pl...
Category

2010s Contemporary Diamond Watches

Materials

Diamond, 18k Gold, Rose Gold

Guy Ellia 18 Karat White Gold and Diamonds Time Space Strap Watch
Located in New York, NY
18Kt White Gold and Diamond Time Space Reference # OG-RS-2388 LV1 Manual Wind 46.8 mm diameter 56 diamonds 43 hour power reserve 30 meters water resistant Black crocodile strap with...
Category

2010s Modern Diamond Watches

Materials

Diamond, 18k Gold, White Gold

DeLaneau 18 Karat Yellow Gold Diamond and Multicolored Sapphires Bracelet Watch
Located in New York, NY
DeLaneau was founded by a woman in 1949 in Switzerland. They are one of the first watch companies to devote their entire collection to ladies timepieces. The face of this 18 karat y...
Category

1990s Contemporary Diamond Watches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Piaget Ladies White Gold and Diamond Watch with Rare Tree Bark Texture Bracelet
Located in Chicago, IL
Circa 1970s Piaget ladies Bracelet Watch, 25 M.M. 2 piece 18k White Gold Case with Round Brilliant cut Diamond Bezel totaling 1 Carat. 17 Jewel Mechanical, Manual wind movement, Sil...
Category

1970s Vintage Diamond Watches

Materials

Diamond, 18k Gold

Retro Cartier Diamond Ruby Watch
Located in Beverly Hills, CA
Retro Cartier Diamond Ruby Watch. Featuring 5 Old European Cut diamonds approximately 0.25 carat total, D-E color, VS clarity. With 4 square ruby highlights approximately 1.20 carat ...
Category

1940s Retro Vintage Diamond Watches

Materials

Diamond, Ruby, 14k Gold, Rose Gold

Universal Geneve Golden Shadow Model 18K Diamond Wrist Watch
Located in Solvang, CA
Estate Universal Geneve Golden Shadow model 18K diamond wrist watch. This 18 karat yellow gold ladies wrist watch by Universal Geneve is the Golden Shadow model. The 18K wrist watch ...
Category

Early 2000s Diamond Watches

Materials

Diamond, 18k Gold, Yellow Gold

Zenith Large and Impressive Vintage Yellow Gold and Diamonds Cuff Bracelet Watch
Located in Chicago, IL
Circa 1970s Very Large and Impressive Ladies Cuff Bracelet Watch, Measuring 1 3/4 X 2 inches wide across the top, 3 open textured back tubes make up the the bracelet that measures 2 ...
Category

1970s Modernist Vintage Diamond Watches

Materials

Diamond, 18k Gold

Automatic Wristwatch White Gold White & Black Diamond Sapphire Micromosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

WristWatch Gold Titanium White Diamond Sapphire Shark Strap Decorated NanoMosaic
Located in London, GB
Micromosaic watch in titanium and sapphires. Shark strap. Swiss quartz movement. Unique piece. Titanium Case 35mm Nano­Mosaic ­ Sapphire Glass ­ Quartz Movement (Swiss Made) White...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Sapphire, White Gold, Titanium, 18k Gold

Automatic Wristwatch White Gold White Diamonds Ruby Hand Decorated Micromosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Ruby, White Diamond, 18k Gold, White Gold

Stylis Wristwatch Steel Case White Diamond Handmade Decorated Micromosaic
Located in London, GB
Steel Case Nano­Mosaic ­ Satin Strap Quartz Movement (Swiss Made) Silver 925‰ White Diamonds For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Steel, Stainless Steel

Stylish Wristwatch Silver White Diamonds Guilloche Dial Decorated Micromosaic
Located in London, GB
Watch Silver White Diamonds Quartz Movement Piece entirely handmade by micromosaic artists. For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Silver

Stylish Wristwatch White & Black Diamond White Gold Quartz Movement
Located in London, GB
Limited edition: 10 pieces only. Gold Case Nano­Mosaic ­ Sapphire Glass ­ Satin Strap Quartz Movement (Swiss Made) White Gold 750‰ ­ Ice Diamonds Balck Diamonds For any quest...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Wristwatch Gold White & Brown Diamonds Sapphires Alligator Strap Micromosaic
Located in London, GB
Micromosaic watch with gold case, Swiss Made, Manual Movement. Alligator strap. Limited edition, 10 pieces only. Piece entirely handmade by micromosaic artists. For any questi...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Stylish Wristwatch White Gold White Diamonds Silk strap Quartz movement
Located in London, GB
Gold Case Nano­Mosaic ­ Satin Strap Gold 750‰ White Diamonds Piece entirely handmade by micromosaic artists. Comes with life guarantee For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, White Gold, 18k Gold

Stylish Wristwatch Silver White Diamonds Guilloche Dial Decorated Micromosaic
Located in London, GB
Micromosaic watch with stainless steel case, Swiss Made, Manual Movement. Piece entirely handmade by micromosaic artists. For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Silver

Wristwatch White Gold White Diamonds Corals Fur & Python Strap Guilloche Dial
Located in London, GB
Royal Squirrels collection - SICIS O’Clock The little inhabitants of the most famous parks in the world - Hyde Park, Central Park, Jardin du Luxembourg e Parque Güell - have inspired...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Coral, White Diamond, 18k Gold, White Gold

Stylish Wristwatch Yellow Gold White Diamonds Jade Alligator & Fur Strap
Located in London, GB
The little inhabitants of the most famous parks in the world - Hyde Park, Central Park, Jardin du Luxembourg e Parque Güell - have inspired this collection. The parks are places of c...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Jade, 18k Gold, Yellow Gold

Stylish Automatic Wristwatch White Gold Black Diamond Alligator Strap NanoMosaic
Located in London, GB
Micromosaic watch with diamonds, Swiss Made, Automatic Movement. Alligator strap. Micromosaic rotor. Steel Case (40 mm) Nano­Mosaic ­ Sapphire Glass ­ Automatic Movement (Swiss ...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Black Diamond, White Gold, Stainless Steel

Quartz Watch Necklace White Gold White Diamond Sapphires Emeralds Micromosaic
Located in London, GB
Gold Case Nano­Mosaic ­ Sapphire Glass Quartz Movement (Swiss Made) White Gold 750‰ White Diamonds Sapphires Emeralds For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Stylish Quartz Watch Necklace White Gold Black Diamond Hand Decorate NanoMosaic
Located in London, GB
Gold Case Nano­Mosaic ­ Sapphire Glass Quartz Movement (Swiss Made) Yellow Gold 750‰ Black Diamonds For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Black Diamond, 18k Gold, Yellow Gold

WristWatch Gold Titanium White Diamonds Sapphires Alligator Strap Micromosaic
Located in London, GB
Micromosaic watch in titanium and diamonds. Alligator strap. Swiss quartz movement. Unique piece. Titanium Case 35mm Nano­Mosaic ­ Sapphire Glass ­ Quartz Movement (Swiss Made) Wh...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Blue Sapphire, White Gold, Titanium

WristWatch Gold Titanium White Diamonds Sapphires Alligator Strap Tsavorite
Located in London, GB
Micromosaic watch in titanium and diamonds. Alligator strap. Swiss quartz movement. Unique piece. Titanium Case 35 mm Nano­Mosaic ­ Sapphire Glass ­ Quartz Movement (Swiss Made) ...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Stylish WristWatch Gold Titanium White Diamond Sapphire Lizard Strap Decorated
Located in London, GB
Micromosaic watch in titanium and diamonds. Lizard strap. Swiss quartz movement. Unique piece. Titanium Case 35mm Nano­Mosaic ­ Sapphire Glass ­ Quartz Movement (Swiss Made) Whit...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Sapphire, 18k Gold, White Gold, Titanium

Stylish Automatic Wristwatch White Gold White Diamond Pink Sapphires Micromosaic
Located in London, GB
Micromosaic watch with diamonds, pink sapphires, Swiss Made, Automatic Movement. Alligator strap. Gold Case (38 mm) Nano­Mosaic ­ Sapphire Glass ­ Automatic Movement (Swiss Made)...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Pearl, White Diamond, Pink Sapphire, 18k Gold, White Gold

Stylish Quartz Watch Necklace White Gold White Diamond Hand Decorate NanoMosaic
Located in London, GB
White Gold Case Nano­Mosaic ­ Sapphire Glass Quartz Movement (Swiss Made) White Gold 750‰ White Diamonds For any questions please feel free to ask.
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, White Gold, 18k Gold

Stylish Wristwatch Gold Case White Diamond Hand decorated with Micromosaic
Located in London, GB
Micromosaic watch with diamonds, Swiss Made, Automatic Movement. Satin strap. Gold Case (38 mm) Nano­Mosaic ­ Sapphire Glass ­ Gold 750‰ White Diamonds For any questions plea...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, 18k Gold, Gold

Wristwatch Stainless Steel Case Automatic Movement Black & White Diamonds
Located in London, GB
Micromosaic watch, Swiss Made, Automatic Movement. Alligator strap. Micromosaic rotor. Steel Case (40 mm) Nano­Mosaic ­ Sapphire Glass ­ Automatic Movement (Swiss Made) White Go...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Black Diamond, White Diamond, Stainless Steel

Stylish Wristwatch White Diamond White Gold Mother of Pearl Dial Micromosaic
Located in London, GB
Micromosaic watch in white gold 18 kt and diamonds. Satin strap. Swiss quartz movement. Limited edition of 10 pieces. Gold Case Nano­Mosaic ­ Sapphire Glass ­ Quartz Movement (S...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Pearl, White Diamond, 18k Gold, White Gold

Wristwatch Gold Amethyst White Diamond Mother-of-Pearl Micromosaic Decorated
Located in London, GB
Micromosaic watch in yellow gold 18 kt and amethysts. Satin strap. Swiss quartz movement. Limited edition of 10 pieces. Gold Case with mother of pearl Nano­Mosaic ­ Sapphire Glass ...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Amethyst, White Diamond, Pearl, 18k Gold, Gold

Stylish Wristwatch White Diamond Blue Sapphire Emerald White Gold Quartz Mov
Located in London, GB
Gold Case Nano­Mosaic ­ Sapphire Glass ­ Satin Strap Quartz Movement (Swiss Made) White Gold 750‰ ­ White Diamonds Blue Sapphires Emeralds For any questions please feel free ...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Sicis Labirinto Micromosaic Diamond Gold Beige Watch
Located in London, GB
Micromosaic watch in yellow gold 18 kt and diamonds. Alligator strap. Swiss quartz movement. Limited edition of 10 pieces. - Micromosaic - Yellow Gold 18 kt 38,67 g - Diamonds 0,23 ...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Watch Silver White Diamonds Chalcedony Fur and Alligator Strap Guilloche Dial
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

Chalcedony, White Diamond, Silver

Watch Yellow Gold Brown Diamonds Sapphires Alligator Strap Decorated Micromosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Arts and Crafts Diamond Watches

Materials

Brown Diamond, Sapphire, 18k Gold, Yellow Gold

Automatic Watch White Gold White Diamonds Sapphires Alligator Strap Micromosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, Sapphire, White Gold, 18k Gold

Automatic Watch White Gold Black Diamonds Alligator Strap Decorated MicroMosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

Black Diamond, 18k Gold, White Gold, Stainless Steel

Watch White Gold White Diamonds Sapphires Alligator Strap Decorated MicroMosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

White Diamond, Sapphire, 18k Gold, White Gold

Rolex White Gold Diamond Art Deco Wristwatch, 1926
Located in London, GB
An Art Deco vintage wristwatch by Rolex made in 1926. 18 carat white gold case, set with diamonds with engraved "chased" sides, hallmarked with the Glasgow import mark into the Unit...
Category

1920s Art Deco Vintage Diamond Watches

Materials

Diamond, 18k Gold, White Gold

Automatic Watch Silver White Diamonds Alligator Strap Dial Decorated Micromosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

White Diamond, Silver, Stainless Steel

Automatic Watch Gold Steel White and Black Diamonds Alligator Strap MicroMosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

White Diamond, Black Diamond, Gold, 18k Gold, Stainless Steel

Watch Automatic Gold White Diamond Sapphire Emerald Alligator Strap Nano Mosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Romantic Diamond Watches

Materials

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

Watch Gold White Black and Brown Diamonds Sapphires Python Strap Micro Mosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Arts and Crafts Diamond Watches

Materials

White Diamond, Black Diamond, Brown Diamond, Sapphire, 18k Gold, Yellow ...

Stylish Watch Yellow Gold White Diamond Python & Fur Strap Decorated MicroMosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Modern Diamond Watches

Materials

White Diamond, 18k Gold, Yellow Gold

Wristwatch White Gold White Diamonds Alligator Strap Designed by Roger Thomas
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

White Diamond, 18k Gold, White Gold

Automatic Watch Gold White Diamonds Sapphire Emeralds Tsavorites Alligator Strap
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

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

Stylish Wristwatch Gold White & Black Diamonds Sapphires Satin Strap NanoMosaic
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Contemporary Diamond Watches

Materials

Sapphire, Black Diamond, 18k Gold, Yellow 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.