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Diamond Necklaces

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473
337
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Gemstone: Diamond
Recognized Seller Listings
Bespoke 1.97 Carat Diamond Solitaire Necklace
Located in Hummelstown, PA
Effortlessly beautiful, a 1.97 carat European-cut diamond shimmers from inside a platinum bezel, suspended on a delicate 14 karat gold chain. The perfect accessory for every occasion...
Category

2010s Diamond Necklaces

Materials

Diamond, 14k Gold, Platinum

Modern Italian Diamond And White Gold Circle Pendant, Circa 2010
Located in London, GB
A modern Italian diamond circle pendant with a pavé line of diamonds, clasping four concentric pavé set diamond circles, mounted in 18ct white gold, marked 750, circa 2010.
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold

White Diamond Rose Cut Chain Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 1.03 ct. white diamond rose cut rounds. Total of 10 stones. Handmade in 18k yellow gold. Length is 18". A great addition to any fine jewelry collection!
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

Van Cleef & Arpels Fleurette Diamond Yellow Gold Pendant Necklace
Located in Feasterville, PA
The Van Cleef & Arpels Fleurette Diamond Yellow Gold Pendant Necklace is an embodiment of sophistication and timeless elegance, reflecting the brand's commitment to beauty and excell...
Category

1990s Diamond Necklaces

Materials

Diamond, Yellow Gold

White Diamond Rose Cut Chain Necklace in 18K White Gold
Located in Los Angeles, CA
Beautiful 1.03 ct. white diamond rose cut rounds. Total of 10 stones. Handmade in 18k white gold. Length is 18". A great addition to any fine jewelry collection!
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, White Gold

White Diamond Round Paper Clip Necklace in 14K White Gold
Located in Los Angeles, CA
Beautiful paperclip necklace with 2.10 ct. good quality white diamond rounds. Handmade in 14k white gold. Length is 20" but can be adjusted.
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, White Gold

White Diamond Round Paper Clip Necklace in 14K Yellow Gold
Located in Los Angeles, CA
Beautiful paperclip necklace with 2.00 ct. good quality white diamond rounds. Handmade in 14k yellow gold. Length is 20" but can be adjusted.
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

0.30 Carat Diamond Pearl 18kt Yellow Gold Long Chain Multi Strand Necklace
Located in Milan, Lombardia
Libre comme l’Or is a long chain in 18kt yellow gold, diamond and pearl. FREE—LIBRE in French—to wear this versatile jewel according to your mood and fancy. FREE like the diamonds an...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

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

Van Cleef & Arpels Cheval 3 Row Diamond Necklace
Located in Beverly Hills, CA
Van Cleef and Arpels Cheval 3 Row Diamond Yellow Gold Necklace, Estimated 25 Cts Total Weight of Fine D-E Color and VVS clarity. Signed Van Cleef & Arpels NY 55xxx About Revealed in...
Category

1990s French Diamond Necklaces

Materials

Diamond, 18k Gold

18K YG Diamond Ancient Coin Pendant Necklace
Located in New York, NY
18K yellow gold ancient coin pendant flexiable choker necklace with 16 diamonds approx 0.96 carat total weight E-F color VS clarity 15.25 inches long Coin approx 1" x 1"
Category

20th Century Diamond Necklaces

Materials

Diamond, 18k Gold

Pomellato Vintage Bunny Yellow & White Gold Diamond Charm Pendant
Located in Feasterville, PA
This exquisite Pomellato Vintage Bunny Charm Pendant is a mesmerizing piece that exudes both charm and luxury. Crafted with meticulous attention to detail, this pendant showcases the...
Category

1990s Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

A 19th Century Rose-Cut Diamond Pendant
Located in Firenze, IT
The central pear-shaped rose-cut diamond within a surround of further rose diamonds, in open claw mount, beneath rose diamond surmount, length 3.7cm. x 2,1cm Weight: 4.6gr.
Category

Late 19th Century Italian Antique Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Aquamarine Necklace 2.24 Carat Pear Shape
Located in Beverly Hills, CA
18K white gold necklace set with a 2.24 carat Aquamarine pear shape, decorated with a double halo set with a total of 0.33 carat Blue Sapphires, and a total of 0.26 carat F-G/VS roun...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Aquamarine, Beryl, Diamond, White Diamond, Multi-gemstone, Sapphire, Blu...

61.26 Carat Kunzite and Diamond Pendant Enhancer in 18k White and Yellow Gold
Located in Los Angeles, CA
This beautiful statement necklace features a spectacular 61.26 carat kunzite cushion with stunning pink color! The gem is surrounded by fine diamonds in an original pendant that is b...
Category

21st Century and Contemporary North American Artisan Diamond Necklaces

Materials

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

GIA Certified 4 Carat Pear Cut Diamond Pendant Necklace VS1 Clarity F Color
Located in Rome, IT
This exquisite pendant features a breathtaking 4.01 ct pear-shaped diamond, graded F for color and VS2 for clarity by GIA. The diamond displays exceptional craftsmanship with an exce...
Category

2010s Unknown Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Platinum

Purple Pink Sapphire Necklace 0.79 Carat Square Radiant
Located in Beverly Hills, CA
14K white gold necklace set with a 0.79 carat Purple-Pink Sapphire square radiant cut, decorated with a total of 0.27 carat round brilliant diamonds. Returns are accepted and paid b...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Multi-gemstone, Sapphire, Pink Sapphire, 14k Gol...

14k Yellow Gold 0.50ctw Diamond Chai Pendant w/ Cable Link Chain Necklace
Located in Montclair, NJ
–Stone(s)– (50) Natural Genuine Diamonds - Round Brilliant Cut - Pave Set - G/H Color - VS1-SI1 Clarity - 0.50ctw (approx.) Material: 14k Yellow Gold Weight: 6.15 Grams Chain Type: 1...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Nathalie Jean Diamond Tourmaline Pearl Carnelian Gold Pendant Necklace
Located in Milan, Lombardia
Made by hand in Nathalie Jean's Milan atelier, Microcosmos Pendant Necklace in 18 karat rosé gold, a warm, sophisticated color close to yellow gold, is devised as a game, a construct...
Category

Early 2000s Italian Contemporary Diamond Necklaces

Materials

Tourmaline, Cultured Pearl, Pearl, Diamond, Carnelian, Yellow Gold, Rose...

Nathalie Jean 0.1 Carat Diamond Tourmaline Gold Drop Dangle Pendant Necklace
Located in Milan, Lombardia
Made by hand in Nathalie Jean's Milan atelier, Microcosmos drop pendant necklace, in 18 karat rosé gold, a warm, sophisticated color close to yellow gold, is devised as a game, a con...
Category

Early 2000s Italian Contemporary Diamond Necklaces

Materials

Diamond, Tourmaline, Gold, 18k Gold, Rose Gold, Yellow Gold

Diamond Tiara / Choker Necklace Art Deco Treasure 8 Carats Bridal, Formal
Located in Southbury, CT
Attention Father of the Bride: This Art Deco 18K white gold and diamond tiara is an exceptionally rare and gorgeous jewel. Created entirely by hand in the 1930s, this semi-flexible ...
Category

1930s American Art Deco Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Old Cut Diamond Riviera Gold Silver Necklace
Located in Los Angeles, CA
Old cut diamond riviera gold and silver necklace. The Old Cut Diamond Riviera Gold and Silver Necklace is a timeless piece of jewelry that exudes elegance and sophistication. Crafte...
Category

21st Century and Contemporary Victorian Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Silver

Cartier d'Amour Rose Gold Diamond Sautoir Necklace
Located in Feasterville, PA
Crafted with precision and care, this sautoir necklace measures an impressive 34.65 inches in length, offering a versatile and sophisticated accessory that can be draped elegantly ac...
Category

Early 2000s Diamond Necklaces

Materials

Diamond, Rose Gold

Nathalie Jean 0.06 Carat Diamond Ruby Tourmaline Carnelian Gold Pendant Necklace
Located in Milan, Lombardia
Made by hand in Nathalie Jean's Milan atelier, Microcosmos Pendant Necklace in 18 karat rosé gold, a warm, sophisticated color close to yellow gold, is devised as a game, a construct...
Category

Early 2000s Italian Contemporary Diamond Necklaces

Materials

Carnelian, Diamond, Ruby, Tourmaline, Gold, 18k Gold, Rose Gold, Yellow ...

Blue Green Tourmaline Necklace 3.38 Carat Emerald Cut
Located in Beverly Hills, CA
18K yellow gold necklace set with a 3.38 carat Blue-Green Tourmaline emerald-cut, decorated with a double halo set with a total of 0.18 carat fancy intense yellow diamonds, VS-SI1, a...
Category

21st Century and Contemporary American Art Deco Diamond Necklaces

Materials

Diamond, White Diamond, Yellow Diamond, Multi-gemstone, Tourmaline, 18k ...

White Diamond Round Tennis Necklace in 14K White Gold
Located in Los Angeles, CA
Gorgeous 16.60 ct. good quality, white, and bright diamond rounds. Handmade in 14k white gold. A total of 114 stones. Three prong setting. Length 15" but can be adjusted. Classic ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, White Gold

Bespoke Diamond Conversion Station Necklace 4.37 Carats
Located in Hummelstown, PA
Wonderfully wearable, this bespoke necklace is composed of a graduated line of sparkling European cut diamonds, weighing a total of 4.37 carats, bezel set in platinum and suspended o...
Category

2010s Diamond Necklaces

Materials

Diamond, Rose Gold, Platinum

Color Change Blue Purple Sapphire Necklace 4.50 Carat Cushion Sri Lanka
Located in Beverly Hills, CA
18K white gold necklace set with a 4.50 carat color changing Ceylon Sapphire from Blue to Purple, and a cluster of 0.57 carat round brilliant diamonds. This Sapphire exhibits a chang...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Multi-gemstone, Sapphire, Blue Sapphire, Purple ...

Victorian openwork diamond pendant, circa 1875.
Located in London, GB
Victorian openwork diamond pendant. Set with sixty-three round rose cut diamonds in closed back grain settings with a combined approximate weight of 0.63 carat, to an ornate circular...
Category

1870s Victorian Antique Diamond Necklaces

Materials

Diamond, Yellow Gold, Silver

Diamonds Rubies, Emeralds, Sapphires, Rock Crystal, Rose Gold and Silver Closure
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). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1950s Italian Retro Vintage Diamond Necklaces

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 9k Gold, Rose Gold, Silver

Louis Vuitton Flower Diamond Pink Sapphire Yellow Gold Necklace
Located in Feasterville, PA
The Louis Vuitton Flower Pendant Necklace is an emblem of sophistication and vibrant elegance, meticulously crafted to stand as a testamen...
Category

Early 2000s Diamond Necklaces

Materials

Diamond, Pink Sapphire, Yellow Gold

Articulated Diamond Ruby Sapphire Yellow Gold Clown Pendant
Located in Los Angeles, CA
Articulated diamond ruby sapphire yellow gold clown pendant, circa 1990s. This Articulated Diamond Ruby Sapphire Yellow Gold Clown Pendant is not just a piece of jewelry, it is a wo...
Category

1990s Italian Contemporary Diamond Necklaces

Materials

Diamond, Ruby, Sapphire, 18k Gold, Yellow Gold

DAVID WEBB Gold, Platinum and Diamond Necklace
Located in New York, NY
An 18 karat yellow gold, platinum and diamond necklace, David Webb. Designed in a tapering trompe l’oeil twist style in gold, with every other strand of the twist enhanced with mul...
Category

1970s American Vintage Diamond Necklaces

Materials

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

Mint Green Tourmaline Necklace 3.56 Carat Round
Located in Beverly Hills, CA
18K yellow gold necklace set with a 3.56 carat Mint Tourmaline round, decorated with a double halo set with a total of 0.20 carat fancy intense yellow diamonds, VS-SI, and a total of...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Multi-gemstone, Tourmaline, 18k Gold, Yellow Gold

New Platinum 2.27ctw Heart Royal Blue Sapphire & Diamond Halo Pendant Necklace
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Sapphire - Heart Brilliant Cut - Prong Set - Very Fine Rich Blue Color - 2.06ct (exact) (20) Natural Genuine Diamonds - Round Brilliant Cut - Prong ...
Category

2010s American Diamond Necklaces

Materials

Diamond, Blue Sapphire, Platinum

Diamond and 18K White Gold Contemporary Necklace of Stylized Foliage.
Located in Aspen, CO
Fine diamond contemporary well made necklace composed of stylized foliage in 18K white gold. With a length of 16.75 inches long, this diamond pave necklace in 18K white gold has 23 ...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Diamond Necklace with 3 cts. of Fine Round Diamonds and over 23 inches long
Located in Aspen, CO
Contemporary 18K white gold long diamond necklace. There are exactly 337 small diamonds in this line necklace which is 23 1/8th inches in length. The estimated diamond weight is 3 ...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

49.09 Carat Diamond Tennis Necklace
Located in Rome, IT
Indulge in the timeless elegance of our exquisite 24-inch Tennis necklace crafted in lustrous 18K white gold. Adorned with an array of meticulously set round diamonds, totaling an im...
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

Peter Suchy 1.05 Carat Cushion Cut Sapphire Diamond White Gold Pendant Necklace
Located in Stamford, CT
Sri Lankan periwinkle blue ICA certified cushion sapphire and diamond pendant necklace. At the center of this pendant is a cushion cut 1.05ct sapphire. Accented by a halo of full cut...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

EMIS BEROS Gold, Black Onyx and Diamond Necklace
Located in New York, NY
An 18 karat yellow gold and high karat gold, black onyx and diamond necklace, Emis Beros, circa 1970s. Designed as a six (6) strand necklace of black onyx beads punctuated with six ...
Category

1970s American Vintage Diamond Necklaces

Materials

Diamond, Onyx, 18k Gold, Yellow Gold, Gold

Mikimoto Diamond Double Strand 8mm Cultured Pearl Yellow Gold Necklace
Located in Holland, PA
18k Yellow Gold Diamond Double Strand 8mm Cultured Pearl Necklace by Mikimoto. The Authentic Mikimoto Double Strand Pearl Necklace...
Category

1990s Japanese Diamond Necklaces

Materials

Diamond, Cultured Pearl, Yellow Gold

Estate Janis Savitt White Diamond Pendant Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful estate Janis Savitt pendant necklace with good quality white diamond rounds. This necklace has a nice weight to it, handmade in 18k yellow gold. Length is 20".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

GIA Certified 29 Carat Flawless/VS Clarity Riviera Diamond Platinum Necklace
Located in Rome, IT
Behold the epitome of luxury and refinement with our mesmerizing 2.00 carat center FG FL-VS Riviera Necklace. Crafted to perfection, this masterpiece boasts a total carat weight of 2...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Platinum

Van Cleef & Arpels Flowerlace Diamond White Gold Large Pendant Necklace
Located in Holland, PA
18k White Gold Diamond Flowerlace Large Pendant Necklace by Van Cleef & Arpels. With 78 round brilliant cut diamonds VS1 clarity, E color t...
Category

2010s French Diamond Necklaces

Materials

Diamond, White Gold

Antique Coral, Enamel, and Diamond Pendant
Located in Litchfield, CT
Circa 1880s, 18k. This antique pendant is authentic fashion from almost 150 years ago! Gorgeous coral beads surmounted by diamonds are surrounded by lush green enamel. Superb design...
Category

1880s Victorian Antique Diamond Necklaces

Materials

Coral, Diamond, 18k Gold, Yellow Gold

Certified 65 Carat Oval Cut Riviera Diamond Necklace
Located in Rome, IT
An exquisite 65 carat oval diamond tennis necklace set in solid 18 carats white gold f color vs1/vs2 clarity
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, White Diamond, White Gold

Tiffany & Co Platinum Diamond Leaf Necklace
Located in New York, NY
Tiffany & Co Platinum Diamond Leaf Necklace with 102 diamonds approx 4.50 carat total weight approx D to E color and VVS to VS clarity Marked: 19...
Category

20th Century American Diamond Necklaces

Materials

Diamond, Platinum

5.80 Carat Emerald Necklace Earrings Set
Located in Richmond, BC
Elegant emerald necklace earrings set. High brilliance, emerald cut, grass green tone 5.80 carats natural emeralds accented with round briilant cut diamonds. Handcrafted set assembl...
Category

21st Century and Contemporary Canadian Contemporary Diamond Necklaces

Materials

Diamond, Emerald, 14k Gold

Carrera y Carrera 18K Yellow White Gold Diamond & Pearl Eagle's Talons Necklace
Located in Southampton, PA
This beautiful and meaningful two-toned necklace from Carrera y Carrera is perfect for someone whose spirit animal is the eagle. The necklace has a yellow gold chain holding a white ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

42 Carat Natural Untreated Diamond Tennis Necklace 18 Carat White Gold
Located in Rome, IT
Introducing our 20-inch Tennis necklace, a breathtaking fusion of elegance and sophistication. Crafted with meticulous attention to detail, this exquisite piece features 105 round di...
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Diamond Tassel Necklace, 53.94 Carats
Located in New Orleans, LA
This exquisite diamond tassel necklace, with a total carat weight of 53.94, is a masterpiece of timeless elegance and craftsmanship. It features a meticulously designed chain of mixe...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

GRS Certified 7.85 Carat Heart Shape Emerald Pendant
Located in Rome, IT
Stunning GRS Certified 7.85 carat heart-shaped natural green emerald gemstone. Sourced from the depths of the earth, this gem embodies the essence of beauty and elegance. this face...
Category

2010s Unknown Modern Diamond Necklaces

Materials

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

40 Carat Diamond Tennis Necklace
Located in Rome, IT
Discover unparalleled sophistication with our 16.25-inch Tennis necklace, meticulously crafted in luxurious 18K white gold. Embrace the allure of 80 round diamonds, totaling an impre...
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold

Onyx Diamond and Ruby 18 Karat Platinum Butterfly Necklace
Located in London, GB
An onyx, diamond and ruby 18 karat white gold butterfly necklace This fun necklace features two intricately crafted wings grain set in white gold with old cut diamonds of 1.50cts ap...
Category

1960s Unknown Retro Vintage Diamond Necklaces

Materials

Diamond, Onyx, Ruby, Gold, 18k Gold, White Gold

14K White Gold 1.20ct Diamond Three Flower Necklace NK01360
Located in Southampton, PA
Sparkling Diamonds with a total weight of 1.20 carats allow this necklace to effortlessly emanate light. A trio of floral motifs elevate the 15 chain. Crafted from 14K White Gold, th...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold

Cartier Belle Epoque Blue Enamel, Diamond, and Pearl Pendant Watch on Chain
Located in New York, NY
A Belle Epoque period enamel, diamond, and pearl pendant watch composed of a blue guilloché enamel case centering on a pearl in a rose diamond surround, with rose diamond border and ...
Category

1910s French Belle Époque Vintage Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold, Platinum, Enamel

Aquamarine and White Diamond Pendant Necklace in 14K & 18K Gold
Located in Los Angeles, CA
Absolutely stunning 73.00 ct. aquamarine oval with 1.50 ct. good quality white diamond rounds. Handmade in 14k and 18k yellow gold. Omega chain made in Italy.
Category

21st Century and Contemporary Diamond Necklaces

Materials

Aquamarine, White Diamond, 18k Gold

20ct Diamond Necklace in 18k Yellow Gold
Located in London, GB
An 18k gold and diamond necklace set with 20.00cts of brilliant cut diamonds. Length: 40.5cm Weight: 56gr
Category

1970s Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

5.50ct Diamond Tennis Necklace
Located in New York, NY
This is an elegant platinum necklace. The necklace is set with sparkling round cut diamonds that weigh approximately 5.50ct. The color of these diamonds is G-H with VS clarity. The n...
Category

20th Century Diamond Necklaces

Materials

Diamond, Platinum

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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