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Diamond Necklaces

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Gemstone: Diamond
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

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

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

15.33ct Round & Pear Diamond Drop Necklace 18k White Gold
Located in BEVERLY HILLS, CA
Grand statement diamonds high jewelry necklace. 6 pear shape diamonds, 2.39 carats. Approximately G/H color and VS2/SI1 clarity. 5 round brilliant diamonds, 2.74 carats. Approximatel...
Category

21st Century and Contemporary Unknown Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White 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

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

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

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

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

TIFFANY & Co. Platinum 18K Gold Diamond Cruciform Cross Pendant Necklace
Located in Los Angeles, CA
TIFFANY & Co. Platinum 18K Gold Diamond Cruciform Cross Pendant Necklace Metal: Platinum and 18K gold Chain: 16" gold chain Pendant: 7mm wi...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum

Adamas Pink Sapphire Diamond Pendant Necklace
Located in New York, NY
Adamas Milano, founded in 1960 in the historic center of Milan, manages to delight once again with pure bright color and dazzling gems. The epitome of femininity and vibrancy, pink s...
Category

21st Century and Contemporary Italian Diamond Necklaces

Materials

Diamond, Pink Sapphire, 18k Gold, White 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

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

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

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

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

Tanzanite Cabochon Pendant 21 Carats Diamonds 18 Karat
Located in North Hollywood, CA
This Tanzanite Cabochon Pendant with a Diamond surround is done in 18K White Gold and is brand new and never been worn. This tanzanite is a...
Category

2010s American Modern Diamond Necklaces

Materials

White Diamond, Tanzanite, 18k Gold

Diamond Necklace
Located in New Orleans, LA
Art Deco Diamond Necklace Circa 1920-1930’s.. Platinum, all European cut diamonds (G-H color / VV1 to VS1) Approx. 4 cts in the pendent and approx. 6 cts. in the necklace
Category

1920s Art Deco Vintage Diamond Necklaces

Materials

Diamond

Diamond Necklace
Diamond Necklace
Free Shipping
Stylish Necklace White Diamonds White Gold Agate Butterfly 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 Italian Contemporary Diamond Necklaces

Materials

Agate, White Diamond, 18k Gold, White 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

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

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

Timeless Tennis 5.7 Carat Diamond Necklace in 18K White Gold
Located in New York, NY
Diamond Total Carat Weight: This exquisite Timeless Tennis necklace showcases a total carat weight of 5.7 carats, featuring 241 excellent round diamonds that create a stunning and ti...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

1.33 Carat 14 Karat Gold Pave Set Multi Heart Diamond Necklace
Located in Los Angeles, CA
14K Gold Beautiful Multi Heart (6 hearts) P with total weight of 1.33 Ct Pave Set Diamond necklace with 16" double chain. Total Diamond Weig...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 14k 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

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

16.15 Carat Australian Opal, Diamond and Emerald Necklace Estate Fine Jewelry
Located in Montreal, QC
Simply Beautiful! Elegant and finely detailed House of Ming design with a Natural Australian Lightning Ridge Dark Gray Opal Pendant Necklace. Center Hand set with a securely nestled ...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Picture Pendant Heart with Diamond Bale on White Topaz by the Yard Chain
Located in New York, NY
Personalized Picture Pendant Heart with a Diamond Bale on White Topaz by the Yard Chain with Diamond enhancer, 18kt yellow gold. Make beautiful jewelr...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, Topaz, 18k Gold, Yellow Gold, 14k Gold, Rose Gold, Silver

Bohemian Grey Moonstone, Freshwater Pearl, and Diamond Sunburst Pendant Necklace
Located in Dallas, TX
This bohemian necklace features a sunburst pendant and diamond clasp; both set in oxidized silver on a grey moonstone and freshwater pearl chain. Pendant including clasp measures apx...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Moonstone, Freshwater Pearl, Diamond, Silver

2.37 Carat Yellow and White Diamond Pendant Necklace in 18K Gold
Located in Central, HK
Vihari Jewel's five stone pendant necklace features 5 diamonds: 2 round brilliant diamonds (F color, VS+ clarity), 2 pear shape white diamonds (F color, VS+ clarity) and a 1.507 cara...
Category

21st Century and Contemporary Hong Kong Contemporary Diamond Necklaces

Materials

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

Antique 5.12Ct Blue Pink and Yellow Sapphire Diamond Platinum Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 5.12 Carat sapphire and 0.48 Carat diamond, platinum pendant; part of our antique jewelry collections. This stunning, fine and impressive piece of antique sapphire jewelry...
Category

1920s Vintage Diamond Necklaces

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Yellow Sapphire, Platinum

18 Karat Diamond Emerald Cut Pendant 2 Carat
Located in Great Neck, NY
This stunning pendant on a chain is set in 18K white gold. The horizontal pendant consists of emerald, baguette, and round diamonds that create the look of a single emerald cut piece...
Category

2010s Thai Modern Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

18 Karat White Gold Diamond Chandelier Pendant with Necklace
Located in Macau, MO
A beautiful diamond chandelier pendant with necklace, set with diamonds weighing 2.9 carats, mounted in 18 Karat white gold. The dangling pendant is composed of brilliant-cut diamond...
Category

2010s Hong Kong Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

14 Karat Yellow Gold Diamond E Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K yellow gold Diamond: 14 round brilliant cut = 0.11cttw Color: G Clarity: VS2 Dimensions: necklace measures 18-inches in length Weight: 3.09 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Fancy Brown Diamond Briolette and White Diamond Necklace 18k Gold
Located in Hong Kong, HK
Fancy Brown Diamond Briolette and White Diamond Necklace 18K gold (Our code EJ 192) A pretty selection of steely- brown diamond briolettes adorn this delicate and fashionable neckla...
Category

21st Century and Contemporary Hong Kong Contemporary Diamond Necklaces

Materials

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

Pearl Single Strand Necklace with Cluster Diamond Heart Charm Pendant
Located in beverly hills, CA
A very pretty cluster diamond heart charm pendant affixed to a luscious strand of cultured pearls. The heart carries total weight of 1.00 carat round brilliant diamond with G-H color...
Category

Early 2000s Contemporary Diamond Necklaces

Materials

Diamond, Pearl

Vintage Victorian Style Apx 3.20ct Rose Cut Diamond Drop Necklace Platinum
Located in BEVERLY HILLS, CA
Stunning vintage rose cut diamond drop pendant necklace. Approximately 3.20 carats of oval and round rose cut diamonds. Approximately I/J color and SI clarity. Missing two smaller st...
Category

1960s Unknown Victorian Vintage Diamond Necklaces

Materials

Diamond, Platinum

Galt AGL Graded Ceylon No Heat Pear Shape Sapphire Approximately 4 Carats
Located in Bay Harbor Islands, FL
Galt Approximately 4 Carat AGL Graded Ceylon No Heat Pear Shape Sapphire and Diamond Pendant featuring a 4.27 carat pear shaped sapphire with an American Gemological Laboratories (AG...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Blue Sapphire, Platinum

Maria Kotsoni, Hand Sculpted 18k Gold Black & White Diamond Flying Bee Pendant
Located in Nicosia, CY
The ‘Flying Bee’, charm pendant, is hand sculpted and crafted in 18k yellow Gold, hallmarked in Cyprus. This impressive statement pendant, comes in a highly polished finish and featu...
Category

2010s Cypriot Contemporary Diamond Necklaces

Materials

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

1.44 Carat Diamond Pave Flower Pendant Necklace 18 Karat in Stock
Located in Boca Raton, FL
Material: 18k white gold Diamond Details: Approximately 1.44 carats of Round Brilliant cut Diamonds. Diamonds are approximately G/H in color and approximately VS in clarity Clasps: L...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

4 Carat Ruby, 3.75 Carat Diamond and Gold Necklace
Located in New York, NY
The front plaque with three curved round diamond channels accented by graduated rectangular rubies, joined to a twin fancy linking back chain gathered by ruby and diamond stations, m...
Category

Early 20th Century Contemporary Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold

18k White Gold GIA Certified Heart Shaped Diamond Necklace with Hidden Pave Halo
Located in Miami, FL
Nothing says “love” like a heart, and that is what makes the heart shape especially popular as an anniversary gift. Perfect and just big enough, we thoroughly and thoughtfully made t...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Gurhan 24 Karat Yellow Gold and Silver Diamond Necklace
Located in West Palm Beach, FL
A, beautiful 24K & Silver Diamond necklace by Gurhan, this listing is for the necklace but you can buy this as a suite with the pair of earrings. This is a beautiful necklace with a ...
Category

21st Century and Contemporary Art Nouveau Diamond Necklaces

Materials

Diamond, Yellow Gold, Silver

Platinum Diamond Coral Bead Necklace
Located in New York, NY
Platinum clasp, adorned with approx. 1.20ctw in diamonds, featuring 3 strands of coral beads. Necklace is 27" long, coral beads range from 8mm x 7mm to 12mm x 11.5mm. Weight - 203.3...
Category

20th Century Diamond Necklaces

Materials

Coral, Diamond, Platinum

Emerald, Ruby and Diamond Beaded Pendant Necklace
Located in New York, NY
Beaded necklace style made in yellow gold showcasing a boomerang-shaped pendant micro-pave set with round brilliant diamonds. Finished with square emeralds and rubies bar set in the ...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Emerald, Ruby, Yellow Gold

5.50 Carat Aquamarine Diamond White Gold Pendant Necklace
Located in Stamford, CT
1960's Aqua and diamond halo pendant necklace. 5.50ct natural untreated oval aqua surrounded by 18 round brilliant cut accent diamonds in 14k white gold. 18 inch chain. 1 oval cut ...
Category

Mid-20th Century Diamond Necklaces

Materials

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

Nouvelle Bague Rose Necklace with Enamel and Diamond C2871GP
Located in Wilmington, DE
Nouvelle Bague Rose Necklace with Enamel and Diamonds in 18k White Gold Chain Length 16" C2871GP
Category

2010s Diamond Necklaces

Materials

Diamond, Enamel

14 Karat Gold Pendant with Enamelled Portrait and Diamonds
Located in Brisbane, QLD
A very fine Art Nouveau enamelled portrait pendant in two tone 14kt gold, set with diamonds. The piece dates to France during the early 20th century at the height of the Art Nouveau ...
Category

Early 20th Century French Art Nouveau Diamond Necklaces

Materials

Diamond, Gold, 14k Gold, Enamel

Roman Malakov 2.01 Carat Total Oval Cut Diamond Fashion Pendant Necklace
Located in New York, NY
A unique and chic fashion necklace showcasing 2.01 carat total made with 6 pieces of oval cut brilliant diamonds, H-I Color, VS-SI in Clarity, single drilled and attached by 18K Whit...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.28 Carat Natural Diamond Peace Sign Necklace Pendant 14 Karat White Gold Chain
Located in New York, NY
0.28 Carat Natural Diamond Peace Sign Necklace 14K White Gold 18'' Chain 100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, White Gold

6.83 Carats Total Pear & Round Shape Diamond Halo Diamonds by the Yard Necklace
Located in New York, NY
A unique diamond by the yard necklace showcasing a pear shape diamonds, set in a row of round brilliant diamonds in a halo design. Each diamond halo is spaced evenly with more round ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.20 Carat Diamond Pendant Hamsa Necklace in 14 Karat White Gold - Shlomit Rogel
Located in Ramatgan, IL
Diamond Pendant Hamsa Necklace in 14 Karat White Gold - Shlomit Rogel Beautiful 14K white gold Hamsa necklace set with 22 sparkling diamonds. It's a perfect gift to protect your lov...
Category

21st Century and Contemporary Israeli Art Deco Diamond Necklaces

Materials

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

Roberto Coin Love Letter L Pendent with Diamonds 001634AWCHXL
Located in Wilmington, DE
18kt White Gold Diamonds 0.03 total carat weight L 18″ Chain 001634AWCHXL
Category

2010s Diamond Necklaces

Materials

Diamond

1.00 Carat Natural Diamond Cross Pendant 14 Karat White Gold G SI Chain
Located in New York, NY
1.00 Carat Natural Diamond Cross Necklace 14K White Gold G SI 18 inches chain 100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond Necklace 1.01CT G-H SI 14K White Gold ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

1.00 Carat Natural Diamond Bezel Necklace 14 Karat White Gold
Located in New York, NY
1.00 Carat Diamond Bezel Necklace G SI 14K White Gold 18 inches 100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond Necklace 1.00CT G-H SI 14K White Gold, Bezel style, ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

18ct Yellow Gold and Diamond Necklace "Maternity Star"
Located in AGNES WATER, AU
"Maternity Star" 18ct yellow gold featuring a cabochon cut (dome-shaped) amethyst center stone surrounded by nine white diamonds (TDW 0.22ct), which is a reflection on the miracle ...
Category

2010s Unknown Artisan Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow 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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