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Diamond Jewelry

149,570
574
to
22,360
1,066
103,458
31,268
320
3,104
37,795
108,925
1,241
2,579
1,698
1,515
1,507
1,473
97,306
50,887
1,970
126,594
69,802
53,006
38,989
32,863
150,163
27,156
30,156
15,430
15,975
59132
12084
12007
8880
6095
to
37,650
24,247
11,289
4,491
4,178
Gemstone: Diamond
Natural 0.70 Carat Heart Shape Diamond Band Ring Solid 14k White Gold Jewelry
Located in IN
Natural 0.70 Carat Heart Shape Diamond Band Ring Solid 14k White Gold Jewelry Details :- Stone :- Diamond Stone Shape :- Heart / Round Making :- Handmade Treatment :- Natural Item C...
Category

21st Century and Contemporary Modern Diamond Jewelry

Materials

Diamond, 14k Gold, White Gold

Cartier 'Love' Rose Gold 6-Diamond Bracelet, Small Model
Located in New York, NY
Authentic Cartier 'Love' bracelet crafted in 18 karat rose gold is set with six round brilliant cut diamonds (E-F, VS) weighing 0.15 carats total. Size 18, 3.65 mm wide. Signed Cart...
Category

2010s Diamond Jewelry

Materials

Diamond, 18k Gold, Rose Gold

Diamond Yellow Gold Ribbon Bow Clip On Earrings
Located in Los Angeles, CA
Diamond and yellow gold ribbon bow clip-on earrings 1990s. Contact us right away if you have additional questions. We are here to connect you with beautiful and affordable antiqu...
Category

1990s Contemporary Diamond Jewelry

Materials

Diamond, 18k Gold, Yellow Gold

Diamond Natural Blue Sapphire 18 Karat Yellow Gold Vintage Bypass Ring
Located in Boca Raton, FL
Diamond and sapphire bypass ring crafted in 18 karat yellow gold. The ring features round brilliant cut diamonds weighing approximately .64 carat total weight and graded H-I color an...
Category

Late 20th Century Contemporary Diamond Jewelry

Materials

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

5.48 Carat Tourmaline Diamond 14 Karat White Gold Ballerina Ring
Located in San Dimas, CA
The most beautiful Ballerina ring to be designed! Truly a collectors item! This ring has a square cut 3.06 Carat Tourmaline and is surrounded by 28 Baguette Cut Diamonds that weigh...
Category

21st Century and Contemporary Victorian Diamond Jewelry

Materials

Diamond, Tourmaline, 14k Gold, White Gold

Bvlgari White Gold Diamond B.Zero1 Ring AN850556
Located in London, GB
An intricate 18k white gold diamond ring by Bvlgari from the B.zero1 collection. The ring is composed of signature spirals pave set with round brilliant cut diamonds with an approxim...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, 18k Gold, White Gold

Ruby and Diamond Elongated Lever Back White Gold Earrings
Located in New York, NY
Fourteen karat white gold elongated lever back hoop earrings Six round rubies weighing 3.20 carats Rubies measuring from 4.5 millimeter to 3.75 millimeter Rubies are naturally mined ...
Category

2010s Contemporary Diamond Jewelry

Materials

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

Fred Leighton Gold, Emerald and Colored Diamond Brooch
Located in New York, NY
Fred Leighton Gold, Emerald and Colored Diamond Brooch In 18k Yellow Gold. This brooch is created in a foliate design, adorned with emerald beads with total weight of approximately 4...
Category

21st Century and Contemporary Artist Diamond Jewelry

Materials

Diamond, Emerald

Platinum Cushion Shaped Diamond Engagement Ring
Located in Greenwich, CT
This Cushion shaped Diamond Engagement Ring displays a striking 4.64 carats cushion shaped center stone and a scintillating halo of 208 round brilliant diamonds pave-set in Platinum ...
Category

21st Century and Contemporary Modern Diamond Jewelry

Materials

Diamond, White Diamond, Platinum

Roman Malakov, 5.58 Carat Fancy Light Yellow Marquise Cut Diamond Halo Ring
Located in New York, NY
This beautiful ring showcases a 5.58 carat Fancy Light Yellow marquise cut center stone. Center stone is set in 18 karat yellow gold and surrounded by a row of pear and heart shape d...
Category

21st Century and Contemporary Contemporary Diamond Jewelry

Materials

Yellow Diamond, Diamond, Platinum

22.73 Ct Heart Shape Tanzanite-Diamond by the Yard Necklace w. 5.98 Ct Diamonds
Located in Los Angeles, CA
This Beautiful 22.73 Ct Heart Shape Tanzanite is set in a beautiful hand crafted Hear shape Pendant with Halo (with 22 perfectly matched 2.7 mm Round Brilliant diamond) hanging on a ...
Category

2010s Neoclassical Diamond Jewelry

Materials

Diamond, Tanzanite, 18k Gold

Antique Diamond Floral Brooch Eighteen Karat Yellow and White Gold
Located in New York, NY
An antique Victoria-era bouquet floral brooch with array of old European old mine-cut diamonds weighing approximately 3 carats Tested 18 karat white and 14 karat rose gold back It me...
Category

Mid-19th Century Victorian Antique Diamond Jewelry

Materials

Diamond, Gold, 14k Gold, 18k Gold, Rose Gold, White Gold

Sapphire and Diamond Two-Tiered White Gold Drop Earrings
Located in New York, NY
Fourteen karats white diamond and sapphire two tiered drop earrings Four oval sapphires weighing 3.20 carats Diamonds weighing 0.25 carats Sapphire hue tone color rich blue New Ea...
Category

2010s Contemporary Diamond Jewelry

Materials

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

Eye Unisex Ring 18 Karat Yellow Gold Tigers Eye Ruby Diamond
Located in London, GB
This very unique eye ring from The Eye collection, it's a perfect everyday talisman, elegant and stylish. The Eye collection, showcases this award winning, fine jewellery designer’s ...
Category

2010s Artisan Diamond Jewelry

Materials

Diamond, Ruby, Tiger's Eye, 18k Gold, Yellow Gold

Vintage 1.10 Carats Diamonds 1.30 Carats Ruby 18 Carats White Gold
Located in Paris, FR
Charming white gold ring set with a central brilliant-cut diamond of approximately 0.45 carats and adorned with 5 rubies and 13 brilliant-cut diamonds. Central diamond color estimat...
Category

1770s Retro Antique Diamond Jewelry

Materials

Diamond, Ruby, White Gold

AnaKatarina 'Valerie' Diamond and 18k Gold Hoop Earrings
Located in Dedham, MA
This Piece: Spikes of gold and inverted diamonds bring to mind the 1970's punk rock scene of leather and attitude. Ana-Katarina has recreated this vibe for the modern woman whose ae...
Category

21st Century and Contemporary Contemporary Diamond Jewelry

Materials

Diamond, 18k Gold

Aquamarine, Sapphires, Diamonds, 14 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). Amazing retrò ring in 14 karat wh...
Category

1960s Retro Vintage Diamond Jewelry

Materials

Aquamarine, Diamond, Sapphire, White Gold, 14k Gold

Cynthia Scott 1.25ct Natural Alexandrite and 18kt Gold Ring, Made in Italy
Located in Logan, UT
Elegant and sophisticated, yet incredibly easy to wear, my Italian crafted Contessa ring is a perfect backdrop for special gemstones. This ring features one of the most prized and hi...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, Alexandrite, Gold, Yellow Gold, 18k Gold

Timeless Every Day Diamond Lever-Back White Gold Earrings for Her Forever
Located in Montreux, CH
Classical Diamonds (Matching Ring Available) Earrings 14K White Gold Diamonds 75-RND 57-1,16-4/6A Weight 5,32 grams
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, White Gold

Aquamarine, Blue Sapphire and Diamond Ring Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Aquamarine 2.15 carats, Blue Sapphire 0.87 carat and Diamond 0.24 carat Ring set in 18 Karat White Gold Settings Width: 1.7 cm Length: 1.7 cm Ring Size: 52 Total Weight: 7.18 gram...
Category

2010s Art Deco Diamond Jewelry

Materials

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

Pink Tourmaline Turquoise Malachite Ruby Diamond Cocktail Ring in 14 Karat Gold
Located in Hong Kong, HK
This stunning piece features a 4.9 carats pink tourmaline that demonstrate a strong pink color, assented with 1.20 carat of white round diamond. Malachite and turquoise are handcraft...
Category

2010s Contemporary Diamond Jewelry

Materials

Diamond, Malachite, Tourmaline, Turquoise, Ruby, Yellow Gold, Gold, 14k ...

French 1930s Art Deco Diamonds Paving 18 Karat White Gold Ring
Located in Poitiers, FR
Ring in 18 karat white gold. Important Art Deco ring, it presents a setting of rectangular shape with cut sides decorated with a radiant decoration of calibrated synthesis sapphires ...
Category

1930s Art Deco Vintage Diamond Jewelry

Materials

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

Michael Bondanza Diamond Emerald Onyx Gold Swan Brooch
Located in Los Angeles, CA
Michael Bondanza emerald diamonds black onyx yellow gold and platinum swan brooch circa 1990. SPECIFICATIONS: DIAMONDS: twenty-eight round brilliant-cut diamonds totaling approxi...
Category

1990s Art Deco Diamond Jewelry

Materials

Diamond, Emerald, Onyx, Gold, 18k Gold

Oval Ruby Surrounded by Diamonds White and Rose Gold Layered Necklace Pendant
Located in New York, NY
Fourteen karats white and rose gold trending layered necklace pendant with oval-shaped ruby surrounded by diamonds Fine quality oval-shaped ruby weighing 1.01 carat Diamond weighing...
Category

2010s Contemporary Diamond Jewelry

Materials

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

10.08ct. Tanzanite “DIANA” Ring
Located in Brooklyn, NY
I named this ring “DIANA” because I associated the main stone with Princess Diana. 10.08ct. "loop clean" Tanzanite has a rich violet-blue color that gives it a royal feeling. Side s...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, Tanzanite, Platinum

GIA Certified 22 Carat Long Diamond Earrings
Located in Rome, IT
A stunning gorgeous and fashionable GIA diamond earrings, suitable for all occasions. Metal: 18K White Gold Gemstone: Natural diamond: Carat: 22.87ct Color: G-H Clarity: SI-VS1 21 g...
Category

2010s Modern Diamond Jewelry

Materials

Diamond, White Diamond, 18k Gold

Emerald and Diamond Two-Tiered White Gold Drop Earrings
Located in New York, NY
Fourteen karats white diamond and emerald two tiered drop earrings Four emerald-cut emeralds weighing 2.20 carats Diamonds weighing 0.25 carats Emeralds hue tone is bright vivid gr...
Category

2010s Contemporary Diamond Jewelry

Materials

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

5.79 Carat Natural Ruby Diamond 14 Karat Rose Gold Bangle
By DGI
Located in Los Angeles, CA
Stunning Statement Ruby Diamond Bangle! This Bracelet has 7 Natural Oval Cut Rubies that weigh 2.94 Carats. It also has 308 Round Cut Diamonds that weigh 2.85 Carats. The total car...
Category

2010s Modern Diamond Jewelry

Materials

Diamond, Ruby, 14k Gold, Rose Gold

IGI ANTWERP Certified MINOR OIL EMERALD INVESTMENT GRADE 7.97 Carats
Located in Rome, IT
IGI ANTWERP Perfect Investment Grade Emerald Ring with side trillion diamonds handmade in Italy please check the video the emerald is breathtaking!
Category

2010s Modern Diamond Jewelry

Materials

Diamond, White Diamond, Emerald, Palladium, Platinum

Peter Suchy GIA Certified 2.01 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
Peter Suchy Art Deco Inspired diamond engagement ring. 2.01 carat radiant cut center diamond certified by the GIA. Accented by two emerald cut side diamonds, in a platinum setting. ...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, Platinum

GIA Natural No Heat Ruby Diamond Platinum Cocktail Ring
Located in Miami, FL
This chic ruby and diamond cocktail ring is crafted in solid platinum, weighing 9.2 grams and 17mm x 9mm high. Showcasing a prominent GIA lab reported oval shaped, prong-set red ruby...
Category

1960s Art Deco Vintage Diamond Jewelry

Materials

Diamond, Ruby, Platinum

8.32 Carat Tourmaline Diamond Cocktail Ring
Located in Torun, PL
This 8,32ct tourmaline (Rubellite) has been catch on the band made of white and rose 18kt gold. It's been decorated with 15 white diamonds VVS/G. Total diamonds 0,21ct.
Category

21st Century and Contemporary Artisan Diamond Jewelry

Materials

Diamond, Tourmaline, 18k Gold, Rose Gold, White Gold

2.75 Carat Round Diamond Pave Engagement Ring
Located in New York, NY
An absolutely gorgeous piece! Set with a 2.75 carat round brilliant diamond center stone in a 4 prong basket. The tapered 18k white gold composition embellished with graduating round...
Category

21st Century and Contemporary Modern Diamond Jewelry

Materials

Diamond, 18k Gold, White Gold

Vintage Carved Jade Buttons on Diamond Hoop White Gold Earrings
Located in New York, NY
A vintage pair of triangle carved jade buttons Old Chinese natural apple jade carvings and diamonds earrings Hand assembles and handmade into 14 Karat white gold diamond hoop drop ea...
Category

2010s Contemporary Diamond Jewelry

Materials

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

18 Karat Gold Modern Ring with Pearls and Diamonds
Located in New York, NY
Dramatic geometric ring, this design is a statement maker. Classically inspired with a fusion of Art Deco and ancient Greek elements. Rendered in 18k gold, with white pearls and ac...
Category

21st Century and Contemporary Contemporary Diamond Jewelry

Materials

Diamond, Pearl, Gold, 18k Gold

Mid-Century 8.80 CTW Sapphire Diamond Platinum Cocktail Ring
Located in Philadelphia, PA
Bypass style ring features an emerald cut sapphire - set East to West Weighing approximately 7.05 carats with medium light and slightly violetish blue color Encompassed by shoulder...
Category

1950s Vintage Diamond Jewelry

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Pink Sapphire Pendant Necklace 1.94 Carat
Located in Beverly Hills, CA
1.94 carat pear shaped Pink Sapphire is set in this 18K white gold pendant, adorned by 0.58 carats of square pink sapphires, and a total of 0.25 carats of round diamonds. The chain l...
Category

21st Century and Contemporary Contemporary Diamond Jewelry

Materials

Diamond, White Diamond, Multi-gemstone, Pink Sapphire, 18k Gold, White Gold

Van Cleef & Arpels Diamond Coral Yellow Gold Rose de Noël Earrings
Located in New York, NY
The iconic Rose de Noel earrings by Van Cleef & Arpels, each designed as a coral flowerhead with 18k yellow gold wirework pistils surrounding a brilliant-cut diamond cluster centre. ...
Category

1980s Vintage Diamond Jewelry

Materials

Coral, Diamond, 18k Gold

Antique Art Nouveau Diamond Ruby and Pearl Brooch
Located in New York, NY
Antique 18k white and yellow gold Art-Nouveau Diamond Ruby and Pearl brooch Brooch of openwork scrolling and floral design Set with a central pearl, flanked with diamonds weighing ap...
Category

1890s Art Nouveau Antique Diamond Jewelry

Materials

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

Rolex Ladies Datejust Blue Diamond
Located in Sylmar, CA
Gender - Ladies Condition - Pre owned Model - 69174 datejust Metals - stainless steel Case size - 26mm Crystal - Sapphire Bezel - custom steel 1CT diamond Movement - automatic calibe...
Category

1980s Vintage Diamond Jewelry

Materials

Diamond, Stainless Steel

Diamond Platinum Pendant Necklace
Located in New York, NY
An extremely white and bright round brilliant cut diamond is uniquely set in this platinum handcrafted pendant necklace. With a platinum curved claw extending to the table of the dia...
Category

2010s Contemporary Diamond Jewelry

Materials

Diamond, Platinum

Retro Star 16 Carat Ruby Cabochon Diamond Platinum Halo Ring
Located in Beverly Hills, CA
One Retro Star 16 Carat Ruby Cabochon Diamond Platinum Halo Ring. Featuring one cabochon cut star ruby of approximately 16.00 carats. Accented by 20 round brilliant cut diamonds with...
Category

1950s Retro Vintage Diamond Jewelry

Materials

Diamond, Ruby, Star Ruby, Platinum

Bvlgari Rose Gold Carnelian & Diamond Divas' Dream Earrings and Necklace Suite
Located in London, GB
An elegant 18k rose gold carnelian and diamond jewellery suite by Bvlgari from the Divas' Dream collection. The pendant features a carnelian fan shaped motif with a single round bril...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Carnelian, Diamond, 18k Gold, Rose Gold

Graff Vintage 22 Carat Weight Diamond Gypsy Earrings
Located in New York, NY
Amazing Graff Vintage 22 Carat Weight Diamond Gypsy Earrings total diamond weight is approx. 22.9 cts. dimensions approx. 2″ in length by 1.30″ width; 26 grams Signed “GRAFF“; ci...
Category

1980s Modern Vintage Diamond Jewelry

Materials

Diamond, 18k Gold

Certified Jadeite and Diamond Pendant Necklace, Colorless Icy Jade Perfection
Located in Hong Kong, HK
Please check out the HD video! This pendant is certified by two labs to be natural jadeite jade. The pendant is set in 18k rose gold and white diamonds. The well carved colorless icy...
Category

2010s Diamond Jewelry

Materials

Diamond, White Diamond, Jade, Gold, 18k Gold, Rose Gold

18 Karat Yellow Gold Ruby White Diamond Aventurine Leaf Flower Drop Earrings
Located in Milano, IT
Amazing drop earrings mounted in 18 karat yellow gold, the protagonist of these earrings are the rubies and Aventurine, both are hand carved to recreate a flower and a leaf .
Category

2010s Diamond Jewelry

Materials

Diamond, White Diamond, Ruby, Aventurine, Gold, 18k Gold, Yellow Gold

Tiffany & Co. Diamond Starburst Brooch
Located in New York, NY
Tiffany and company diamond starburst brooch. This brooch is set with 116 round brilliant cut diamonds with total weight of approximately 3.5ct, color F-G, clarity VS. Equipped with...
Category

Late 20th Century Artist Diamond Jewelry

Materials

Diamond, Platinum

Antique Gold Brooch with Diamonds, Sapphire, Emerald and Rubies, c. 1860
Located in Aspen, CO
Antique yellow gold brooch (perfect as a stock pin), this horse shoe will symbolizes good luck has 3 gypsy set old cut diamonds, 2 rubies, 1 sapphire and 1 emerald. There are .30 c...
Category

19th Century Victorian Antique Diamond Jewelry

Materials

Diamond, Emerald, Ruby, Sapphire, Gold, 14k Gold

GIA 3.09ct Asscher Cut Diamond 3 Stone Engagement Wedding Platinum Ring
Located in New York, NY
Timeless Estate GIA 3.09ct Asscher Cut Diamond Engagement Anniversary 3 Stone Platinum Ring. This Impressive ring will take your breath away! Once in a lifetime opportunity to own a...
Category

2010s Diamond Jewelry

Materials

Diamond, Platinum

Harry Winston Yellow Nad White Diamond Ring in Platinum
Located in New York, NY
Harry Winston yellow nad white diamond ring in platinum. Center of the ring features 1.03ct fancy intense yellow cushion modified brilliant cut diamond, clarity VVS1, GIA Certificate...
Category

21st Century and Contemporary Artist Diamond Jewelry

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

Van Cleef & Arpels Mystery-Set Sapphire, Diamond Earrings
Located in New York, NY
VAN CLEEF & ARPELS Mystery-Set Sapphire, Diamond Earrings A pair of platinum ear clips, set with diamond and sapphire, signed Van Cleef & Arpels. dimensions approx. 0.90″ in length b...
Category

1970s Vintage Diamond Jewelry

Materials

Diamond, Sapphire, Platinum

Mark Henry 3.30 Carat Rubellite Tourmaline and Diamond Ring, 18 Karat
Located in New York, NY
A member of the tourmaline family, Rubellite is desired for its nuances of red. From a mellow pink to the most vivid pigeon blood red, rubellite is not only a mesmerizingly dazzling ...
Category

21st Century and Contemporary Modern Diamond Jewelry

Materials

Diamond, Tourmaline, Rubelite, 18k Gold, White Gold

18 Karat Rose Gold 17.40 Carat Vanadium Chrome Beryl Bracelet by Jochen Leën
Located in Antwerp, BE
18 K Rose Gold bracelet set with a 17.40 Carat Vanadium Chrome Beryl stone. Oval cut: 19.5 x 15.8 mm The Vanadium Chrome Beryl is accompanied with 2.70 Carat brilliant cut Collectio...
Category

21st Century and Contemporary Contemporary Diamond Jewelry

Materials

Beryl, White Diamond, 18k Gold, Rose Gold

Victorian Diamond Enamel Gold Cross Pendant
Located in Greenwich, CT
Beautifully lit up with 11 large cushion cut diamonds and 12 side diamonds, this Victorian handmade black enamel and 18 karat yellow gold cross is one-of-a-kind. Circa 1870. Total ...
Category

1870s Early Victorian Antique Diamond Jewelry

Materials

Diamond, Gold, 18k Gold, Enamel

Van Cleef & Arpels Diamond and Ruby Earrings
Located in New York, NY
Vintage 18k yellow gold diamond and ruby hoop ear clips signed by Van Cleef & Arpels. dimensions approximately 1" in length by 0.5" in width Stamped "Van Cleef & Arpels" and numbered
Category

1980s Vintage Diamond Jewelry

Materials

Diamond, Ruby, 18k Gold

De Grisogono Diamond Gypsy Hoop Earrings
Located in New York, NY
De Grisogono Diamond Gypsy Hoop Earrings A pair of 18k white gold ear clips, set with round brilliant-cut diamonds. diamond total carat weight is approx. 21 cts. dimensions approx. 2...
Category

21st Century and Contemporary Diamond Jewelry

Materials

Diamond, 18k Gold

10.80 Carat Diamond and Pink Sapphire Chandelier Earrings in 18 Karat White Gold
Located in Tustin, CA
These captivating custom-made 18 karat white gold estate chandelier earrings for pierced ears feature an elaborate design dangling with diamond filagree and pink sapphire drops that ...
Category

21st Century and Contemporary Diamond Jewelry

Materials

White Diamond, Pink Sapphire, 18k Gold

Eighteen Karats Rose Gold Diamond Eternity Five Millimeter Band
Located in New York, NY
Eighteen karats rose gold diamond eternity ring Diamonds weighing 0.50 carat Band width measuring 5 millimeter Anniversary or stacking band Diamond quality G VS New Ring Ring size ...
Category

2010s Contemporary Diamond Jewelry

Materials

Diamond, Rose Gold, 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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