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Diamond Necklaces

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Gemstone: Diamond
Returnable Items Only
18 k white gold necklace with central heart with brilliant cut diamonds ct.0.65
Located in BARI, IT
18 k White gold necklace with a central heart with diamonds (ct.0.65). The chain is of the diamond type. The heart has three larger central stones and an ...
Category

2010s Italian Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Round Diamond with Ruby Art Deco Style Floral Pendant in 18K White Gold
Located in Bangkok, TH
Perfect with everyday wear, this charming vintage Art Deco revivalist design pendant features brilliant-cut diamonds surrounded by ruby for red rose petals finished look all in 18K w...
Category

21st Century and Contemporary Unknown Art Deco Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

20 Karat Diamond Accent Chain Necklace
Located in Secaucus, NJ
Chain necklace set in 20K yellow gold with 0.52cts diamond stations and paisley clasp detail, length measures 24 inches.
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

Tiffany & Co. Paloma Picasso Diamond Heart Yellow Gold Pendant Necklace
Located in Holland, PA
18k Yellow Gold Diamond Heart Pendant Necklace by Paloma Picasso for Tiffany & Co. With 8 Round brilliant cut diamonds VS1 clarity, G color total weight approx. .15ct Details: Length...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Yellow Gold

18kt Gold Flower Pendant with 2.83ct Diamonds, 4.40ct Sapphire, Pearl
Located in Antwerp, BE
Amazing 18kt white Gold Flower Pendant / Necklace with 2.83ct Diamonds, 4.40ct Sapphire, Pearl A real work of art as well from our goldsmith as from the setter to make the color gra...
Category

21st Century and Contemporary Artisan Diamond Necklaces

Materials

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

Gold Lavaliere Pendant Necklace with Three Diamonds and Six Peridots
Located in MELBOURNE, VIC
Vintage lavaliere pendant necklace stamped 18 carat gold. Pendant on a 18 carat gold chain is featuring a flower as a centre piece, set with...
Category

1920s Unknown Art Nouveau Vintage Diamond Necklaces

Materials

Diamond, Peridot, Gold, 18k Gold

14 Karat Gold, Cultured Pearl, Mabé Pearl, Onyx and Diamond Necklace
Located in Palm Beach, FL
14 Karat Gold, Cultured Pearl, Mabé Pearl, Onyx and Diamond Necklace The single-strand composed of cultured pearls measuring approximately 4.2 to 10 mm., completed by a gold clasp ...
Category

20th Century Diamond Necklaces

Materials

Diamond, Onyx, Cultured Pearl, Gold

10 Karat Yellow Gold with Sapphire and Diamond Charm / Heart Pendant
Located in Stamford, CT
10 Karat Yellow Gold Charm/Heart Pendant with Blue Sapphires and Diamonds. 4.1 grams total weight.
Category

2010s Modern Diamond Necklaces

Materials

Diamond, Blue Sapphire, 10k Gold

Antique 1930s Diamond and Platinum Pendant
Located in Jesmond, Newcastle Upon Tyne
An impressive antique 1930s 0.87 carat diamond and platinum pendant; part of our diverse antique jewelry and estate jewelry collections. ...
Category

1930s Unknown Art Deco Vintage Diamond Necklaces

Materials

Diamond, Platinum

Victorian 1890s Diamond Aquamarine Pearl and Yellow Gold Pendant or Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning Victorian 3.22 carat diamond and 2.10 carat aquamarine, seed pearl and 18 karat gold pendant / brooch; part of our diverse antique jewelry collections. This stunning, fine and impressive antique aquamarine pendant...
Category

19th Century Unknown Late Victorian Antique Diamond Necklaces

Materials

Aquamarine, Diamond, Pearl, 18k Gold, Yellow Gold

14 Karat Gold Cable Necklace with Ruby and Diamond Soldered Pendant 0.10 TDW
Located in Stamford, CT
14Kt White Gold Cable Necklace W/ Ruby And Diamond Soldered Pendant 0.10 TDW 18 Inch 3.09 grams total weight
Category

2010s Diamond Necklaces

Materials

Ruby, Diamond, 14k Gold

32.20ct Diamond & 18k White Gold Necklace
Located in BEVERLY HILLS, CA
Stunning diamond and white gold over lay necklace. 32.20 carats of round brilliant diamonds, approximately G/H color and SI clarity. 18-karat white gold. Accommodated with an up to d...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

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

Roman Malakov 0.51 Carats Trillion Cut Diamond Solitaire Pendant Necklace
Located in New York, NY
A fashionable yet simple pendant necklace showcasing a single 0.51 carat trillion diamond, set in a 14K White Gold mounting. Suspended on a 16 inches white gold chain. Perfect for yo...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Capucelli '3.50 ct. t.w.' Natural Diamonds Tennis Necklace, 14k Gold 4-Prongs
Located in Great Neck, NY
Handmade in New York of polished 14k white gold, CAPUCELLI's Tennis necklace showcases a delicate box chain embellished with dozens of shimmering white diamonds. Beautiful Diamond T...
Category

21st Century and Contemporary Art Nouveau Diamond Necklaces

Materials

Diamond, 14k Gold

Capucelli '5.50 ct. t.w.' Natural Diamonds Tennis Necklace, 14k Gold 4-Prongs
Located in Great Neck, NY
Handmade in New York of polished 14k white gold, CAPUCELLI's Tennis necklace showcases a delicate box chain embellished with dozens of shimmering white diamonds. Beautiful Diamond T...
Category

21st Century and Contemporary Art Nouveau Diamond Necklaces

Materials

Diamond, 14k Gold

Capucelli '7.50 ct. t.w.' Natural Diamonds Tennis Necklace, 14k Gold 3-Prongs
Located in Great Neck, NY
Description Beautiful Diamond Tennis Necklace. A staple in your jewelry collection. Handmade in New York City. This tennis necklace showcases a delicate 3 Prongs chain embellished wi...
Category

21st Century and Contemporary Art Nouveau Diamond Necklaces

Materials

Diamond, 14k Gold

Diamond by the Yard Necklace
Located in Great Neck, NY
Italian made Diamond by the yard necklace set in 14K white gold. The total weight is 0.84 carats. Color and Clarity of the stones are G, S...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, 14k Gold

Vintage Platinum Gold Gemstones Golf Club Necklace
Located in Beverly Hills, CA
Beautiful stylized Golf Club pendant made of platinum and yellow gold featuring yellow sapphires, diamonds and a pink tourmaline. Total carat weight of diamonds is 0.54 points, they ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Yellow Sapphire, Gold, 14k Gold, Platinum

Pave Diamond Butterfly Necklace in 18 Karat White Gold
Located in Hong Kong, HK
This diamond collection showcases elegant pieces that are extremely versatile and a timeless addition to your jewelry collection and are perfect for everyday wear. These pieces are part of our dainty and fine jewelry line known as TanisaJewelry - see more on Instagram @tanisajewelry. Pave Diamond...
Category

21st Century and Contemporary Hong Kong Contemporary Diamond Necklaces

Materials

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

14K White Gold Diamond Straight Line Tennis Necklace 11.75cts
Located in New York, NY
14K White Gold Diamond Straight Line Tennis Necklace Features 11.75Cts of Diamonds. Diana M. is a leading supplier of top-quality fine jewelry fo...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

14K White Gold Diamond Tennis Necklace, Features 3.13Cts of Round Diamonds
Located in New York, NY
"14K White Gold Diamond Tennis Necklace, Features 3.13Cts of Round Diamonds. FG color and SI calrity and Excellent cut 17" inche...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

14 Karat White Gold Sapphire and Diamond Pendant Necklace
Located in Stamford, CT
14 Karat White Gold 15 Inch Sapphire and Diamond Pendant Necklace 0.25 total diamond weight 2.04 grams total weight.
Category

2010s Modern Diamond Necklaces

Materials

Diamond, Blue Sapphire, 14k Gold

Victorian Gold Pendant 1.50 Carat Natural Old European Diamond, circa 1910
Located in Los Angeles, CA
Victorian Yellow Gold Pendant, set with 31 approximately 1.50 Carat Natural Old European Diamonds ranging from F-H color and VS-SI in cla...
Category

1910s Unknown Late Victorian Vintage Diamond Necklaces

Materials

Diamond, Gold

Abstract Garnet and Diamond Platinum Pendant and Chain
Located in London, GB
This lovely hand made necklace features an abstract loop platinum pendant, set with a pear shaped and an oval dark red garnet, coming to a combined approximate weight of 5.16 carats ...
Category

Early 2000s English Modern Diamond Necklaces

Materials

Diamond, Garnet, Platinum

PANIM 11.45 Carats Diamond Rosecut 18K White Gold Choker Necklace
Located in Tsim Sha Tsui, Hong Kong
PANIM 11.45 Carats Diamond Rosecut 18K White Gold Choker Necklace A gorgeous diamond necklace is a staple in everyone's wardrobe .This Panim Classic Diamond Rosecut Necklace...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

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

Diamond Akoya Pearl 14 Karat 2-Strand Necklace Certified
Located in Brooklyn, NY
Fine Quality Akoya Pearl Diamond Necklace 8 mm 14k Gold 2-Strand Certified $9,750 010933 This is a Unique Custom Made Glamorous Piece of Jewelry! Nothing says, “I Love you” more th...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Cultured Pearl, Pearl, 14k Gold, Yellow Gold

0.40 Carat Diamond Open Circle Karma Necklace in 14K Yellow Gold, Shlomit Rogel
Located in Ramatgan, IL
0.40 Carat Diamond Open Circle Karma Necklace in 14K Yellow Gold - Shlomit Rogel Make everyday sparkle! A beautiful and classic design, this contemporary circle pendant necklace is ...
Category

2010s Israeli Contemporary Diamond Necklaces

Materials

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

18 Karat Yellow Gold Retro Necklace Fancy Diamonds Leaf Design
Located in Zurich, Zollstrasse
A masterfully crafted necklace with a leaf design from solid 18 Karat Yellow Gold. It is accentuated with 46 white and fancy colored Diamonds weighing circa 5.60 ct. The necklace mea...
Category

1960s Swiss Contemporary Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

6.43 Carat Green Tourmaline and Diamond Pendant Halo Necklace in 18 karat Gold
Located in Miami, FL
6.43 Carat Green Tourmaline and Diamond Pendant Necklace in 18 karat Gold This is a handmade, one of a kind creation by H&H Jewels. It features a 6.43 carat of tourmaline surroun...
Category

2010s Diamond Necklaces

Materials

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

Diamond Opera Tennis Necklace
Located in New York, NY
Important Diamond tennis opera necklace. Over 275 Perfectly matched stones make up this one of a kind master piece. The super white D E F colored VS2 clarity round brilliant cut dia...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold

Yellow Gold Butterfly Necklace with Pave Diamonds
Located in New York, NY
An Elegant Butterfly accented with brilliant diamonds!!! 18kt Yellow Gold Butterfly Necklace with White Pave Diamonds weighing approximately ...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Hirsh Opera Length Diamond Necklace
Located in London, GB
A stunning shimmering opera length necklace measuring 37 inches in total, made up of pretty daisy style clusters of collection quality diamonds. - 888 wh...
Category

2010s British Artisan Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

30 inch White and Red Coral Necklace
Located in New York, NY
A 30 inch White and Red Coral Necklace with round coral beads that range in size from 3.5 mm - 8mm each. Accented with white irregular shape coral and...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Coral, White Diamond, Yellow Gold

Antique 1920s Seed Pearl and 1.11 Carat Diamond and Platinum Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning antique seed pearl, 1.11 carat diamond and platinum pendant on a vintage pearl and 14 karat white gold chain; part of our diverse antique jewelry collections. This stunning, fine and impressive antique diamond and pearl pendant...
Category

1920s Dutch Romantic Vintage Diamond Necklaces

Materials

Diamond, Pearl, Natural Pearl, Platinum

22k Gold Reversible Kashi Pearl and Diamond Necklace, by Tagili
Located in New York, NY
22k gold reversible Kashi Pearl and Diamond Pendent is set in an organic bezel with Tagili Designs Signature finish. The diamonds set in the pearl elevates your style to the next lev...
Category

2010s American Artisan Diamond Necklaces

Materials

Pearl, Diamond, 22k Gold

Stylish Italian 18 Karat White Gold and Ebony Diamond Groumette Chain
Located in Zurich, Zollstrasse
A Fine Italian 18 K white Gold and Ebony Groumette Chain Necklace, of which one link is highlighted with brilliant cut Diamonds weighing 1.62 ct. Natu...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

White Gold 18 Kt. Necklace with a Brilliant Fish 1, 18 Carats Pendant
Located in BARI, IT
White gold necklace with small fish pendant entirely made with 1.18 ct brilliants pavé. The fish seems like it has been taken at the amp. Its little eye is ...
Category

Early 2000s Italian Diamond Necklaces

Materials

Diamond, White Gold

18 Karat White Gold Heart / Religious Pendant with Diamond Accents
Located in Stamford, CT
18 Karat White Gold Heart / Religious Pendant with Diamond Accents 0.06 TDW. 2.41 grams total weight.
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond

18 Karat Tahitian Pearl Diamond Pendant 0.83 Carats 15 MM
Located in New York, NY
18 Karat white gold pendant featuring one grey Tahitian Pearl measuring 15 mm with a diamond cap of 86 round brilliants weighing 0.83 carats. Diamond Bale 8.4 MM Long Diamond Cap w...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, Pearl, White Gold

3.00 Carat Natural Diamond Tennis Necklace G SI 14k Rose Gold
Located in New York, NY
3.00 Carat Diamond Necklace G SI 14K Rose Gold 16 inches 100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond Necklace 3.00CT G-H SI 14K Rose Gold, Prong style 16 i...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Round Brilliant Diamond & Gold Disk Pendant 14k Gold Engravable Necklace
Located in Austin, TX
Gorgeous Diamond Disk Necklace! 14 Karat Yellow Gold disk necklaces are huge in fine jewelry fashion! You can find them in every magazine. This diam...
Category

21st Century and Contemporary South African Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

White Diamond Round and Blue Oval Pendant Necklace in 14k Yellow Gold
Located in Los Angeles, CA
Beautiful 0.12 ct. white diamond rounds with a nice big blue stone in this handmade pendant necklace. Carefully handcrafted in 14k yellow gold. Length of chain is 18".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

14 Karat White Gold Pear Diamond Halo Necklace
Located in Scottsdale, AZ
Designer: custom Material: 14K white gold Diamonds: 1 pear cut = 1.10cttw Color: I Clarity: SI2 Diamonds: 28 round cut = 0.30cttw Color: H Clarity: SI1 Dimensions: necklace measures...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Round Diamond in 18 Karat White Gold with Toggle Clasp Leaf Necklace
Located in Miami, FL
Brilliance Jewels, Miami Questions? Call Us Anytime! 786,482,8100 Style: Diamond Leaf Necklace Metal Type: White Gold Metal Purity: 18k Stones: 45 Round Brilliant Cut Diamonds Diam...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Gold, 18k Gold

18k Gold Byzantine Pendant with Brilliant Diamonds
Located in Athens, GR
18 karats white and yellow gold pendant of the Noir collection in a dramatic size and impeccable workmanship, set with 1.72 carats selected extra white diamonds and our heavy 18k gol...
Category

2010s Greek Byzantine Diamond Necklaces

Materials

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

6.70 Carat Natural Red Ruby and Natural Diamond 14K Solid Yellow Gold Necklace
Located in Los Angeles, CA
6.70Ct Natural Red Ruby and Natural Diamond 14K Solid Yellow Gold Necklace Amazing looking piece! Stamped: 14K Oval-Cut Ruby Weight is Approx. 6.00 Carats Ruby Measures: 12 x 10m...
Category

2010s American Diamond Necklaces

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

1.0 Carat Diamond Cluster Diamond Station Necklace 18 Karat in Stock
Located in Boca Raton, FL
18k White Gold 1.0ctw Diamond Cluster Diamond Station Necklace Material: 18k White Gold Diamond Details: Approximately 1.0ctw of Round Cut Diamonds Diamond Stations: There are 8 bez...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Long Lightning Necklace with Black Diamond in 14K Rose Gold
Located in Istanbul, TR
Long ightning Necklace With Black Diamond İn 14K Rose Gold By Selda Jewellery Additional Information: Collection: Thunder Collection 14k Rose Gold 0.22ct Black Diamond Pendant Heigh...
Category

2010s Turkish Modern Diamond Necklaces

Materials

Black Diamond, Rose Gold, 14k Gold

18K Yellow Gold Flower Design Pendant with 0.31 Ct Natural Diamonds and Sapphire
Located in רמת גן, IL
Beautiful Flower Design in an 18K Yellow Gold Pendant with Round Yellow Sapphire in 1.85 Total Carat and Round Diamonds in 0.31 Total Carat. -64 sapphire main stones of 0.0245 ct. e...
Category

2010s Singaporean Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

White Diamond Pave Pendant Necklace in 14k White Gold
Located in Los Angeles, CA
Gorgeous 1.50 ct. of good quality, white, and bright diamonds in this modern yet classy pendant necklace. Handmade in 14k white gold. Length is 18".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, White Gold

GIA Certified 1.11 Carat Natural, Fancy Brown-Yellow, Even VS1 Pear Cut Diamond
Located in Surfside, FL
GIA certified 1.11 carat pear cut diamond: Natural, Fancy Brown-Yellow even color, VS1 clarity, set in white gold pendant, on a 15" chain.
Category

20th Century Diamond Necklaces

Materials

Diamond, Yellow Gold

Roman Malakov, 0.79 Carat Round Diamond Bezel Solitaire Pendant Necklace
Located in New York, NY
A simple and versatile solitaire pendant necklace showcasing a single round diamond in a 14 karat white gold bezel. Attached to a 16 inch white gold chain. Style available in diffe...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Chopard Diamond Pave Heart Pendant
Located in Greenwich, CT
Truly beautiful Diamond Pave Heart Pendant by Chopard. Happy Diamonds collection, combining the feminine style with jewelry excellence. This heart...
Category

21st Century and Contemporary Swiss Modern Diamond Necklaces

Materials

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

Round Cut Diamond with Emerald and Sapphire Floral Pendant in 18K Gold
Located in Bangkok, TH
Perfect with everyday wear, this charming vintage Art Deco revivalist design pendant features brilliant-cut diamonds surrounded by emerald...
Category

20th Century Unknown Art Deco Diamond Necklaces

Materials

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

Roman Malakov, Round Diamond Cross Pendant Necklace
Located in New York, NY
A brilliant pendant necklace showcasing six round diamonds bezel set in an 18 karat white gold cross design. Suspended on a diamond by the yard chain. Diamonds weigh 1.27 carats tota...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.61 Carat Natural Diamond Octopus Necklace 14 Karat White Gold G SI Chain
Located in New York, NY
100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond Necklace 0.61CT G-H SI 14K White Gold 4 gram, Pave style, 3.80 gram 13/16 inch in height, 9/16 inch in width 6...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

8.41 Carat Round Brilliant Diamond Station Necklace 18 Karat in Stock
Located in Boca Raton, FL
18k Rose Gold 8.41ctw Round Brilliant Diamond Station Necklace Material: 18k Rose Gold Diamond Details: Approximately 8.41ctw of Round Brilliant cut Diamonds. There are 48 stones tot...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Rose Gold

Contemporary Diamond 18k Two-Tone Gold Necklace
Located in New York, NY
A splendid necklace embellished with white round diamonds set in 18K white and yellow gold. Diamond weight approx. 13.00 carats total, estimated G-H colors, VS-SI clarity. Overall ...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, White Gold, Yellow Gold, 18k Gold

Shop Vintage and Antique Diamond Necklaces on 1stDibs

Whether you're pairing an elegant drop necklace with an evening gown for a fancy dinner or layering a solitaire pendant with your favorite gold or silver chains, you can count on the fact that antique diamond necklaces will elevate any ensemble.

Pendant necklaces worn by royalty and nobles conferred wealth and prestige in ancient times. Wearing jewelry has since become far more widespread, and today, personal adornment is all about expression: Luxury diamond necklaces — Cartier diamond necklaces, Harry Winston diamond necklaces and other iterations — exude confidence and can symbolize the celebratory nature of a deep romantic relationship. (Diamond lockets, for example, which feature a motif that first emerged in the 1800s, are frequently shaped like a heart.) 

Diamonds and 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.

In the late 19th century, "King of Diamonds" Charles Lewis Tiffany — founder of famed luxury house Tiffany & Co. — purchased a 287-carat yellow diamond discovered in the Kimberely Mine in South Africa. The stone was the largest yellow diamond ever mined, and was fashioned by gemologist George Kunz into a cushion-cut brilliant of 128 carats. Kunz gave it a total of 90 facets: 48 on the pavilion, 40 on the crown, plus the table and culet. Breakfast at Tiffany’s fans may recognize the stone from promotional photos for the film — actress Audrey Hepburn wore it as part of the Jean Schlumberger-designed Ribbon Rosette necklace.

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 diamonds 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 the 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. The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's 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).

Grading aside, a beloved diamond necklace is going to deliver the perfect amount of sparkle and joy every time you put it on, whether it's an emerald and diamond necklace, a classic diamond choker or some other similar accessory.  

Find antique and vintage diamond necklaces today on 1stDibs.

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