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Diamond Necklaces

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Gemstone: Diamond
Style: Modern
Certified Type A Orange & Green Craved Jade Diamond 18K Yellow Gold Pendant
Located in KOWLOON, HK
Introducing a truly remarkable piece of jewelry, the Certified TYPE A Orange & Green Jade Jadeite Carved Bat Holding Coin & 0.23ctw Diamond 18K Yellow Gold Pendant. This pendant comb...
Category

2010s Hong Kong Modern Diamond Necklaces

Materials

Diamond, Jade, 18k Gold, Yellow Gold

Alexander Beverly Hills 21.65ct Three-Row Diamond Necklace 18 Karat White Gold
Located in BEVERLY HILLS, CA
Exquisite and timeless three row diamonds tennis bracelet, by Alexander Beverly Hills. 327 diamonds total, 21.65 carats total. Approximately F-G color and VS clarity. 40.28 grams, 18...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

18K Yellow Gold Scrolling At The Front 48.00cttw Diamond Necklace
Located in New York, NY
Indulge in the captivating allure of this exquisite diamond scrolling necklace, a vision of timeless elegance. Crafted in 18K Yellow Gold wit...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Diana M. Custom 10.00 cts 3 prong diamond 18k white gold tennis necklace 16.5"
Located in New York, NY
Custom 18 k white gold 3 prong diamond tennis necklace 10.00 cts round diamonds 109 stones 0.09 each Color FG SI clarity. Excellent cut.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

GIA Certified 3.12 Carat Heart Round Diamond Pendant Platinum Necklace
Located in Rome, IT
An 18K White Gold Diamonds By The Yard Necklace, adorned with a captivating ensemble of Heart and Round Cut Diamonds, each exuding its own unique brilliance and charm. Crafted with p...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, White Diamond, Platinum

New Made 14k Gold Natural Diamond And Enamel Decorated Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition... Total weight 19.4 grams... Dimention is diamond totally 0.60 carat... Clearity is diamond G-H color and vvs-vs... Dimention is necklace 27.5 cm... Please co...
Category

2010s Turkish Modern Diamond Necklaces

Materials

Diamond, 14k Gold

Cinnamon Diamond Rose Gold Pendant Necklace Handmade
Located in Miami, FL
Show your timeless love with this glowing Cinnamon Diamond Rose Gold Pendant Necklace! Crafted with light brown bezel-set diamond, this necklace is absolutely stunning. The 14kt. ros...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Rose Gold, Gold, 14k Gold

10.66 Carat Fancy Intense Yellow Pendant & Diamond Tennis Necklace In 18k Gold.
Located in New York, NY
Exquisitely crafted with meticulous attention to detail, this classic 10.66-carat diamond tennis necklace features a distinctive touch: a 1.51-carat Fancy Intense Yellow pear-shaped ...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold

GIA Certified Pendant with 6.03ct Fancy Intense Yellow Heart Shape Diamond
Located in New York, NY
Introducing our exquisite Heart Shape pendant crafted in lustrous 18K Yellow Gold, featuring a stunning centerpiece - a dazzling 6.03 carat Fancy Intense Yellow Heart Shape diamond c...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold

18 Karat White Gold and Diamond Cross Pendant with Chain by Meister
Located in Zurich, CH
Extraordinary 18 karat white gold and diamond cross pendant with chain by renowned Swiss tradition jewelry house Meister. Pendant designed as a cross and set with 17 brilliant-cut d...
Category

Late 20th Century Swiss Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

15 Carat Green Emerald Diamond Pendant Necklace
Located in Rome, IT
A sophisticated jewelry store adorned with elegant displays, showcasing exquisite pieces. The camera focuses on a radiant necklace displayed on a velvet-lined tray. Elevate your sty...
Category

2010s Italian Modern Diamond Necklaces

Materials

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

Emerald Bean Diamond Gold Pendant
Located in Los Angeles, CA
Emerald Bean Diamond Pendant. A beautiful natural pear shaped luminous emerald suspended by a gold cap encasing a single brilliant cut diamond. A spectacularly chic one of a kind pen...
Category

2010s Indian Modern Diamond Necklaces

Materials

Diamond, 18k Gold

Diamond By The Yard 1.40 Carat Necklace
Located in Rome, IT
dazzling 1.4 carat Total Weight Round Brilliant Cut Diamond By The Yard Necklace in 14K White Gold. Weighing 13.8 grams, the chain boasts a length of 16 inches, with the option to a...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, White Diamond, White Gold, 14k Gold

New Made 18k Gold Natural Diamond Decorated Letter S Pendant
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 3.9 grams. Totally is diamond 1.11 ct. The diamond is has F- G color and vvs- vs clarity. Please contact for any questions.
Category

2010s Turkish Modern Diamond Necklaces

Materials

Diamond, 18k Gold

1.01ct Marquise & Round Diamond Pendant in 18KT White Gold
Located in New York, NY
Metal: 18KT White Gold Total Carat Weight: 1.01ctw Chain Length: 15" Long Designer: SES Creations Number of Marquise Diamonds: 1 Carat Weight: 0.46ctw Number of Round Diamonds: 1 C...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

White South Sea Pearl Diamond 18K Gold Statin Brushed Gold Pendant Necklace
Located in Fairfax, VA
Beautiful Unique South Sea Pearl with an amazing Rainbow Colored Iridescence 17 inches chain length 18K Yellow Gold with satin brushed finish 0.10 carats Diamonds F/VS South Sea Pea...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold, Yellow Gold

0.12 Carat Diamonds in 18K Yellow Gold Cross Necklace
Located in New York, NY
Diamond Carat Weight: This graceful cross necklace features a total of 0.12 carats of diamonds. The diamonds, carefully selected for their brilliance, consist of 29 round-cut stones....
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, Yellow Gold, 18k Gold

Zambian Pear Emerald Gemstone Choker Necklace SI/H Diamond 14 Karat White Gold
Located in IN
Crafted with meticulous attention to detail, this Zambian Pear Emerald Gemstone Choker Necklace is designed to be treasured for a lifetime. The radiant 14 karat white gold setting pr...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, Emerald, White Gold, 14k Gold

0.42ct "Big Love" Round Diamond Triangle Pendant in 18KT White Gold
Located in New York, NY
Metal: 18KT White Gold Chain Lenth: 16" Long Pendant Size: 1.5" Number of Round Diamonds: 87 Carat Weight: 0.42ctw Setting: Pave Designer: SES Creations
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Pink Diamond Rose Pendant in 18K White and Rose Gold
Located in New York, NY
Beautiful Rose Pendant in 18K White and Rose Gold meticulously handcrafted with 95 pink melee diamonds = 0.49 carat plus 1 center pink diamond of 0.10 carat. 100 white melee diamonds...
Category

2010s American Modern Diamond Necklaces

Materials

Pink Diamond, 18k Gold, Rose Gold

David Tishbi Platinum and Diamond Slice Necklace
Located in Pacific Palisades, CA
Platinum Pave Diamonds Free-Form Diamond Slice Necklace 37 E/VS 6.26 CTW 3 CT Diamond Slice 16.5″ Inches Infinity Clasp David Tishbi offers: Limited Lifetime Guarantee Complime...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Platinum

Sabbadini Large Mystery Set Sapphire Diamond Flower Brooch Pin
Located in Miami, FL
This outstanding Collectable flower brooch pin was designed by Sabbadini, Italy. It is handcrafted in solid 18K yellow gold weighing approx. 69.9 grams. It features a flowerhead desi...
Category

Late 20th Century Italian Modern Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold

Diamond Cross Necklace In 18k White Gold
Located in Fort Lauderdale, FL
Diamond Cross Necklace In 18k White Gold, - 1 carat total black & white diamonds weight, - length of the necklace is 18”, - cross dimensions 7/8” x 5/8”
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.6 Carat Diamonds in 18K White Gold Cross Pendant
Located in New York, NY
Diamond Carat Weight: This graceful cross pendant features a total of 0.6 carats of diamonds. The diamonds, carefully selected for their brilliance, consist of 54 round-cut stones. E...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, White Gold

White Diamond Round 14K Rose Gold "Hamsa" Drop Pendent Chain Fashion Necklace
Located in Sayreville, NJ
Embrace both style and symbolism with our Rose Gold Hamsa Pendant Chain Necklace. The centerpiece of this necklace is the Hamsa pendant, a symbol reco...
Category

2010s American Modern Diamond Necklaces

Materials

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

Vintage TRINITY 1.30CT Diamond pendant 18K gold 18" chain/14K 35x35MM
Located in Chicago, IL
Vintage heavy, well made Trinity pendant with 18" long chain with hidden bail. Pendant flanked with 13 round brilliant cut natural diamonds, we estimate 1.30CT total weight (white H-...
Category

Late 20th Century Unknown Modern Diamond Necklaces

Materials

Diamond, 14k Gold, 18k Gold

Al Jassasiya Yellow Gold Choker With Diamonds
Located in Doha, QA
This unique piece is designed by Nada AL Sulaiti, Qatari award-winning jewellery designer. It's part of Al Jassasiya Collection which is one of our signature collections, that echoes...
Category

21st Century and Contemporary Qatari Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Diana M. 14 kt white gold, 18" 4 prong diamond tennis necklace featuring 10.50
Located in New York, NY
14 kt white gold, 18" 4 prong diamond tennis necklace featuring 10.50 cts tw of diamonds Diana M. is a leading supplier of top-quality fine jewelry for over 35 years. Diana M is one-...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

29.08 Carat Round Pear Shape Diamond Necklace Solid 14 Karat White Gold Jewelry
Located in IN
Crafted with meticulous attention to detail, the necklace is set in solid 14 karat white gold, providing a luxurious and enduring setting for the exquisite diamonds. The intricate de...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold

18 Karat Yellow Gold Onyx & Fancy Diamond Tiger Necklace
Located in Hong Kong, HK
18 Karat Yellow Gold Onyx & Fancy Diamonds Tiger Necklace 9 RDDI 0.06 CT 324 RDFD 2.68 CT 39 MXOX 2.35 CT 2 RDRU 0.06 CT 18KY 23.29 GM Unleash your wild side with our 18K gold tig...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, Onyx, Yellow Gold

0.2 Carat Diamonds Cross Pendant in 18K White Gold
Located in New York, NY
Diamond Carat Weight: The cross pendant boasts a total of 0.2 carats of diamonds. The design incorporates 37 round-cut diamonds, meticulously set to create a stunning and meaning...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, White Gold, 18k Gold

Diana M. 18kt White Gold Graduated Riviera Tennis Necklace 24.45 cts 3-prong
Located in New York, NY
18kt white gold graduated tennis necklace featuring 24.45 cts of round brilliant diamons set in a 3 prong setting. Diana M. is a leading supplier of top-quality fine jewelry for over...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Gurhan Pastiche Sliced Diamonds 24k Gold & Sterling Station Necklace
Located in Boca Raton, FL
This is an impressive authentic necklace by Gurhan from the PASTICHE collection. It is crafted from 24k gold and sterling silver in black rhodium. It features 3 hand hammered oval be...
Category

21st Century and Contemporary Turkish Modern Diamond Necklaces

Materials

Diamond, 18k Gold, 24k Gold, Yellow Gold

Diana M. Custom 23.38 cts 4 Prong 18k White Gold Graduated Tennis Necklace
Located in New York, NY
Custom 18k white gold graduated tennis necklace 23.38 cts round diamonds Color FG SI clarity. Excellent cut center diamond 1 ct.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Diana M. 18 kt yellow gold, 17" 3 prong diamond tennis necklace
Located in New York, NY
18 kt yellow gold, 17" 3 prong diamond tennis necklace adorned with 26.00 cts tw of round diamonds (83 stones) Diana M. is a leading supplier of top-quality fine jewelry for over 35...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Diana M. 26.00 cts 18k White Gold Graduated Riviera Necklace
Located in New York, NY
Custom 18k white gold graduated tennis necklace featuring 26.00 cts of round brilliant diamonds set in a 4 prong setting 89 stones 0.29 each FG color SI clarity. Excellent cut.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Rachel Koen Diamond Composite Lariat Necklace 14k White Gold 0.29cttw
Located in New York, NY
This precious diamond necklace will leave everyone speechless the moment they see it. Crafted in high polished solid 14k white gold, this necklace is set with brilliant round cut dia...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Beautiful Sapphire, Turquoise & Diamond Devil Eye Necklace In 14k
Located in Fort Lauderdale, FL
Beautiful Sapphire, Turquoise & Diamond Devil Eye Necklace In 14k. - 0.11 carats in diamonds, - 1.1 carats in blue sapphires & turquoise, - length is adjustable 18” or 16”, - wid...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Sapphire, Turquoise, 14k Gold

Timeless Tennis 1.1 Carat Diamond Necklace in 14K Yellow Gold
Located in New York, NY
Diamonds: 23 meticulously selected round diamonds grace this necklace, each securely set in a classic prong setting. The total carat weight of 1.1 carats ensures a captivating and en...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

18kt White Gold Long Necklace Featuring 45.00 cts of marquise, asscher, oval
Located in New York, NY
18kt white gold long necklace featuring 45.00 cts of marquise, asscher, oval, and round diamonds
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

Diana M. 14kt Rose Gold Graduated Reviera Tennis Necklace Featuring 10.20 cts
Located in New York, NY
Custom 14kt rose gold graduated tennis necklace 10.20 cts of round diamonds FG color SI clarity. Excellent cut.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

2.96 Carat Diamond Choker
Located in New York, NY
Dazzling 2.96 carat central emerald-cut diamond and baguette diamonds.
Category

2010s Israeli Modern Diamond Necklaces

Materials

Diamond, 14k Gold

Rachel Koen Gemoro Flower Diamond Ladies Mini Pendant Necklace 14K Yellow Gold
Located in New York, NY
Fall in love with this beautiful flower pendant with a single dazzling round cut diamond. This pendant is a perfect gift for any occasion. It features a flower charm measuring 15mm l...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Bavna 0.18 Cts. White Floating Diamond Hanging Station Necklace in 18KT Gold
Located in Los Angeles, CA
Introducing our exquisite collection of Floating Diamond Necklace, a captivating piece of jewelry that exudes elegance and sophistication. This Invisible Diamond necklace...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

White Diamond, Gold

Moonlight Cushion Cluster Pendant: 0.7 Carat Diamonds in 18K White Gold
Located in New York, NY
Diamond Total Carat Weight: Elevate your style with the Moonlight Collection Cushion Cluster Pendant featuring a total of 0.7 carats of diamonds. The pendant showcases 33 brilliant r...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, White Gold, 18k Gold

"Costis" Square In Motion Necklace with 11.13 carats Pink Tourmalines, Diamonds
Located in Athens, GR
"Costis" Square In Motion Necklace with 11.13 carats Pink Tourmalines and Diamonds. In these necklace of 18K Yellow Gold, especially square-cut Pink Tourmalines of 11.13 carats are ...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Tourmaline, 18k Gold

White gold teardrop pendant set with pear shape natural ruby and diamonds
Located in MELBOURNE, VIC
Classic pendant in 18 carat white gold Set with one pear shape natural Ruby weighing 0.68 carats surrounded by 15 channel set Diamons totally weighing 0.18 carats Pendant length inc...
Category

Early 2000s Unknown Modern Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Diana M . Custom Platinum, Diamond Tennis Necklace Containing 36.56 ct
Located in New York, NY
Custom platinum 16.5" 3 prong diamond tennis necklace containing 36.56 cts of round diamonds 72 stones 0.50 each FG color SI clarity. Excellent cut.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Platinum

Topaz and Diamond Heart Pendant, 5.00 Carat
Located in London, GB
A topaz and diamond heart pendant, central heart shaped orange topaz weighing an estimated 9.00ct, with a three row border of round brilliant cut diamonds and three baguette cut diam...
Category

Early 2000s Modern Diamond Necklaces

Materials

Diamond, Topaz, White Gold

Messika 0.38Cttw Sultane Diamond Pendant Necklace 18K White Gold 17 Inches
Located in New York, NY
Embrace the beautiful Messika Sultane diamond pendant chain necklace. Perfect accent for every day and evening looks. It features a center bezel set round brilliant cut diamond with ...
Category

2010s Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Messika 0.59Ctw Sautoir Kate Diamond Bar pendant Necklace 18K White Gold 29.5 in
Located in New York, NY
This gorgeous Messika Sautoir Kate diamond vertical bar pendant necklace is crafted in highly polished 18K white gold. Featuring pave set round br...
Category

2010s Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

14.69 Carat Diamond Scalloped Tennis Necklace 18 Karat In Stock
Located in Boca Raton, FL
18k White Gold 14.69ctw Baguette & Round Brilliant Cut Diamond Scalloped Tennis Necklace Product: Baguette & Round Brilliant Diamond Necklace Material: 18k White Gold Diamond Detail...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Memoire Diamond Circle Pavé Necklace 62 Round Brilliant Diamond 1.01ctw 18k Whit
Located in Los Gatos, CA
This Memoire Diamond Circle Pavé Pendant necklace features a total of 62 Round Brilliant Diamonds, amounting to 1.01ctw, set in an 18K White Gold 18" A...
Category

2010s Chinese Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Rachel Koen Diamond Triangle Necklace 14K Rose Gold 0.03Cttw
Located in New York, NY
Beautiful and delicate this precious diamond necklace will leave everyone speechless the moment they see it. Crafted in high polished solid 14k rose gold this necklace is pave set wi...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Small Dragonfly Diamond Necklace / Rose Gold
Located in Los Angeles, CA
Elevate your style with our Small Dragonfly Diamond Necklace in Rose Gold. Inspired by the mesmerizing beauty and adaptability of dragonflie...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Rose Gold

Heart Shape Pink Gemstone Necklace Diamond 18 Karat White Gold Handmade Jewelry
Located in IN
Presenting this exquisite heart-shaped pink gemstone necklace, adorned with diamond accents, crafted in 18 karat white gold. This stunning handm...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.92 Carat Pave Diamond Butterfly Necklace 18 Karat
Located in Boca Raton, FL
18k White Gold 0.92ctw Pave Diamond Butterfly Necklace Material: 18k White Gold Diamond Details: Approximately 0.92ctw of Round Brillia...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

18k White Gold Diamond Evil Eye Pendant Necklace
Located in Hong Kong, HK
18K White Gold Diamond Evil Eye Pendant Necklace 44 Diamonds 0.37 CT 1 Ruby 0.12 CT 1 White Pearl 0.78 CT 18 K White Gold 5.39 CT This 18...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White 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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