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Diamond Necklaces

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Gemstone: Diamond
18k Gold Natural Diamond And Amethyst Decrated Pretty Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 11.3 grams. Totally is diamond about 2 carat. The diamond is has G color and vvs-vs-s1. Total lenght is chain 45 cm. Please contact for any q...
Category

1990s European Retro Diamond Necklaces

Materials

Amethyst, Diamond, 18k Gold

Duck Pearls Diamonds Rubies 18 Karat Yellow Gold Pendant Necklace
Located in Marcianise, IT
This charming duck-shaped pendant, crafted in 18-karat yellow gold, is a joyful expression of creativity and masterful craftsmanship. The innovative design utilizes two pearls to rep...
Category

21st Century and Contemporary Italian Diamond Necklaces

Materials

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

Retro Ruby Diamond 14k Gold Brooch Pendant
Located in New York, NY
Ruby Diamond 14k Gold Brooch Pendant High Quality Centering a row of six round brilliant cut rubies, bordered by thirty-two round single cut diamonds weighing an estimated total of a...
Category

Late 20th Century North American Retro Diamond Necklaces

Materials

Diamond, Ruby, 14k Gold

Enchanting 14k White Gold Natural Diamonds w/ Sapphires Necklace w/1.72 ct- IGI
Located in רמת גן, IL
Enchanting 14k White Gold Natural Diamonds w/ Sapphires Necklace w/1.72 ct- IGI Certified This dazzling necklace showcases a stunning combination of diamonds and sapphires, boasting...
Category

2010s Israeli Diamond Necklaces

Materials

Diamond, Sapphire, 14k Gold, White Gold

2 Carat Heart Shape Diamond GIA Certified Pendant Necklace VVS1 D Color
Located in Rome, IT
This 2.00ct heart shaped certified diamond offers a well executed shape, bright white D color, and a 100% eye clean appearance. Exceptionally well cut, this diamond displays fantasti...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold

3.49 Carat Round Brilliant Cut Diamond Tennis Necklace 14 Karat Rose Gold
Located in Great Neck, NY
Brilliant and beautiful tennis necklace, natural round-brilliant cut white diamonds clean and Excellent shine. 14k rose gold classic four-prong style for maximum light brilliance. El...
Category

2010s American Diamond Necklaces

Materials

Diamond, White Diamond, 14k Gold, Rose Gold

35.06 ct Pave Blue Sapphire & Pave Diamonds Tribal Style Necklace In 14k Gold
Located in New York, NY
14K:3.64g,D:9.16ct,Sl:90.25g, Sapphire:35.06ct,
Category

21st Century and Contemporary Indian Contemporary Diamond Necklaces

Materials

Diamond, Blue Sapphire, 14k Gold

14.89 Carat Minor Oil Colombian Emerald & Green Gold Enamel Art Nouveau Necklace
Located in Miami, FL
Art Nouveau Style 14.89 Carat Oval Cut Minor Oil Colombian Emerald, South Sea Pearl, Diamond, and 18K Gold Green Enamel Pendant Necklace. Pendant necklace crafted from 18k white gol...
Category

21st Century and Contemporary North American Art Nouveau Diamond Necklaces

Materials

Diamond, Yellow Diamond, Emerald, Pearl, Gold, 18k Gold, White Gold, Enamel

Oval Ornamented Pendant Locket Necklace 18k Rose Gold 2 Diamonds Pink Tourmaline
Located in Pforzheim, DE
Victor Mayer oval Art Nouveau pendant locket necklace 18k rose gold, 2 diamonds, total 0.04 ct, G VS, pink pear shaped Tourmaline About the creator Victor Mayer Victor Mayer is inte...
Category

21st Century and Contemporary German Art Nouveau Diamond Necklaces

Materials

Diamond, Tourmaline, 18k Gold, Rose Gold

Casey Perez Gold Arc Charm with Green Tourmaline and Diamonds
By Casey Perez
Located in Brooklyn, NY
This architectural yet minimal arc shaped 14K gold charm is ready to slip onto your favorite chain. It features a large bezel set green tourmaline accented with modern banded detail ...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, Tourmaline, 14k Gold

Rubellite, Emerald and Diamond Studded Pendant in 18K White Gold
Located in JAIPUR, IN
Crafted with precision and sophistication, this gold pendant boasts a captivating 1.5 carat (approximately) pear-shaped rubellite, complemented by vivid green emeralds to amplify its...
Category

2010s Indian Diamond Necklaces

Materials

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

Alex Sepkus 'Stingray' Diamond Pendant on 18'' Cable Chain 18K Yellow Gold
Located in Dallas, TX
18K and Diamond "Stingray" Pendant The pendant features 8 diamonds 0.18ct 18'' Cable Chain 1.5mm 6.9 Grams
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

White Gold Diamond Buddha Pendant
Located in Palm Desert, CA
18 Karat White Gold Diamond Buddha Pendant. The pendant features a praying Buddha with round 1.5mm diamonds adorning the majority of the pendant...
Category

1980s American Retro Vintage Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

20 Carat Antique Edwardian Style Rivera Diamond Gold Necklace
Located in New York, NY
Introducing our Antique Diamond Double Line Necklace, a timeless and elegant piece that transports you to a bygone era of opulence and glamour. This exquisite necklace boasts a stunn...
Category

21st Century and Contemporary American Edwardian Diamond Necklaces

Materials

Diamond, Gold

Bulgari 18K White Gold and Diamond "Gourmette" Chain Necklace
Located in New York, NY
Created by Bulgari, Rome, this 18K white gold "gourmette chain" necklace set with approximately 15.00 carats of diamonds dates from the 1980s. A Contemporary 18 karat white gold chain with diamonds by Bulgari. It is composed of flattened gourmette or curb chain links, pavé-set with round brilliant-cut diamonds, approximate total weight 15.00 carats. Beautifully engineered, this sleek, tightly-assembled chain of "gourmette" link sits softly on the neck with an ideal weight, and represents the strength and versatility of Bulgari's hallmark designs. Product Details: Item #: N-21352 Artist: Bulgari Country: Italy Circa: 1980's Dimensions: 15.25" length. Materials: 384 round diamonds (with approximate total weight 15.00 carats); 18K White Gold Signed: Partial BVLGARI N.Y. , ITALY 18Kt, 750, Italian control mark Macklowe Gallery...
Category

Late 20th Century Italian Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

14K Tubogas Yellow Gold Necklace
Located in Great Neck, NY
Diamond set in a Pave' in a Tubogas yellow gold necklace. The necklace is 14K and the carat weight is 0.42 carats. The color of the stones are F-G,...
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, Yellow Gold

Casey Perez Sculptural 18k gold diamond choker with curving detail
By Casey Perez
Located in Brooklyn, NY
A stunning 18K yellow gold choker with curving, diamond pave wave detail. The choker is set with a 1.25 ct brilliant cut round diamond. The choker features a slim hinge at the back f...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold

Alex Sepkus 'Shield' Pendant with Diamonds on a 18'' Cable Chain 18K Yellow Gold
Located in Dallas, TX
18K Yellow Gold and Diamond "Shield" Pendant. The pendant features 7 Diamonds 0.16ctw 18” Cable Chain 1.9mm included 10 Grams
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Vintage 1950s 32.00 Carat Diamond Necklace
Located in New York, NY
Finely crafted in 18k yellow gold and platinum with pave set Round Brilliant cut Diamonds weighing approximately a total of 32.00 carats. Circa 1950s 16 inches long
Category

1950s Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum

NWT $134, 000 18KT Gold Rare Important Fancy 70CT Emerald Diamond Drop Necklace
Located in New York, NY
A Rare 18KT White Gold Emerald Diamond Necklace. Necklace is comprised of Finely Set Glittering Gorgeous Cabochon Emerald Necklace adorned wi...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Emerald, Gold

Tiffany & Co. Elsa Peretti Open Heart Yellow Diamond 18k Gold Pendant Necklace
Located in Birmingham, GB
Rare Vintage Tiffany & Co. Elsa Peretti Open Heart Yellow Diamond 18k Yellow Gold Pendant Necklace. A beautiful, authentic Tiffany & Co open hear...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Neckalce set with ruby and diamonds 18k bicolour gold
Located in The Hague, ZH
18 kt bicolor gold necklace set with ruby ​​tot. 1.90ct and brilliant cut diamonds up to. 1.20 ct - F/G - VS/SI - 45 cm long detailed description: The length of the necklace is 45 ...
Category

2010s Dutch Modern Diamond Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold

18k White Gold 3 Carat Diamond Cross Pendant on Black Silk Cord
Located in Sherman Oaks, CA
Gorgeous Diamond Cross Pendant in 18k White Gold Features Channel Set Baguette Diamonds on Interior of Cross with Pave Set Round Diamond Bezel Each Terminus Has Single Prong Set Roun...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Tanzanite Pendant Necklace Diamond Setting 2.5 Carats 14K White Gold
Located in Laguna Niguel, CA
It comes with the appraisal by GIA GG/AJP All Gemstones are Natural Tanzanite = 2.08 Carat 84 Diamonds = 0.42 Carats Metal: 14K White Gold Dimensions: 28 x 13 mm
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

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

Kieselstein Cord Gold and Diamond Detachable Heart Pendant
Located in New York, NY
Kieselstein Cord 18k yellow gold and diamond detachable heart pendant. This large pendant is designed as a dome shaped heart encrusted with round brilliant cut diamonds, framed in ma...
Category

Late 20th Century American Artist Diamond Necklaces

Materials

Diamond, Gold

Yellow Gold Imperial Topaz Diamond Pendant
Located in Palm Desert, CA
18 Karat Yellow Gold Imperial Topaz Diamond Pendant. The beautiful pendant features a pear-shaped Imperial Topaz on a basket setting with a total of ten round diamonds set above the ...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, Topaz, Imperial Topaz, Yellow Gold, Gold, 18k Gold

Platinum 0.25ct Diamond Everyday Cross Necklace
Located in Southampton, PA
Perfect for daily wear, this symbol of spirituality is expertly crafted in extremely durable and corrosion-resistant 950 platinum. The cross pendant, held by a barely there chain, is...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Platinum

GIA Certified 4.98 Carat Fancy Orangy Pink Diamond Ring
Located in Rome, IT
An exquisite GIA certified 4.98 carat fancy orangy pink vs2 clarity
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Pink Diamond

GIA Certificate Brilliant Necklace 0.51 ct Color River E SI1 Cut EXCELLENT
Located in Viena, Viena
what a valuable necklace, with the best diamond color and the best cut there is, a brilliant necklace with round full cut brilliant approx. 0.51 ct, E (very fine white) / SI1 (small ...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

14K White Gold 2.10ct Diamond Pav Heart Necklace
Located in Southampton, PA
This necklace could well be what's missing in your arsenal. It features a 15 long chain with a lobster clasp and a 1 by 0.80 heart-shaped pendant. The pendant glitters with pav-set r...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Sapphire and diamond pear cut art deco drop necklace and earrings set 18k gold
Located in London, GB
Sapphire and diamond pear cut art deco drop necklace and earrings set 18k gold Gorgeous pear shaped blue sapphire and diamond halo cluster surrounding each jewellery piece all mounte...
Category

21st Century and Contemporary British Art Deco Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold

Vintage Chimento 18K Tri Color Gold 1.05ctw Diamond Collar Choker Necklace
Located in Montclair, NJ
Here we have a very well and solidly made diamond collar necklace designed by Chimento in Italy and crafted in solid 18k yellow, rose and white gold throughout. The necklace features...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Gold, Rose Gold, White Gold, Yellow Gold

Vintage 18 Karat Yellow Gold and Silver Diamond Cross Pendant
Located in London, GB
A vintage 18 karat yellow gold and silver diamond cross pendant. The cross is composed of 11 claw and grain set old cushion and lozenge shaped di...
Category

Early 1900s Unknown Victorian Antique Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Silver

Vintage Rhodolite Garnet Diamond 18k Yellow Gold Pendant
Located in Beverly Hills, CA
One Vintage Rhodolite Garnet Diamond 18k Yellow Gold Pendant. Featuring one pear cut rhodolite garnet weighing approximately 7.75 carats. Accented by 24 round brilliant cut diamonds ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, White Diamond, Garnet, Rhodolite, Gold, 18k Gold, Yellow Gold

14K Yellow Gold Diamond Necklace 1.50ct
Located in Laguna Beach, CA
Ladies' 14k yellow gold diamond necklace. Tests 14k with an electronic tester and weighs 7.8 grams gross weight. The pendant is detachable. It contains a .50ct round brilliant , j co...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Ruby & Diamond White Gold Pendant Necklace
Located in New York, NY
Designed for the modern woman who seeks impeccable style from day to night, elevate your ensemble with the radiant Ruby & Diamond White Gold Necklace. Crafted from lustrous 18-karat...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Natural Tourmaline Diamond Pendant Necklace 18" 14k YG 1.40 TCW Certified
Located in Brooklyn, NY
Natural Beautiful Finely Faceted Quality Tourmaline Diamond Pendant Necklace 18" 14k YG 1.40 TCW Certified $3,450 311011 This is a Unique Custom Made Glamorous Piece of Jewelry! No...
Category

1990s American Diamond Necklaces

Materials

Diamond, Tourmaline, 14k Gold

18k Solid Gold Natural Ruby Diamond Dragonfly Pendant
Located in Den Haag, NL
If you are looking for a unique and meaningful gift for yourself or someone special, you will love our 18k solid gold dragonfly pendant with chain! This pendant is not just a beauti...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Ruby, Gold

14 Karat White Gold 1.02 Carat Round Natural Diamond Drop Necklace
Located in Baltimore, MD
14 Karat White Gold 1.02 Carat Round Natural Diamond Drop Necklace Metal: 14k white gold Weight: 2.79 grams Chain: 16 inches Clasp: Lobster Diamond: 1.02 round I SI1 natural diamond,...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

EGL Certified 5.02 Carat Pear Diamond Pendant and Diamond Halo & Sapphire Detail
Located in Miami, FL
EGL Certified Pear Diamond Pendant and Diamond Halo & Sapphire Detail. Pendant necklace featuring a EGL-certified pear-shaped 5.02-carat natural white diamond center stone with SI2...
Category

21st Century and Contemporary North American Modern Diamond Necklaces

Materials

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

18K Yellow Gold 6.50ct Diamond and Ruby Necklace
Located in Southampton, PA
This dramatic dual-strand necklace is a luxurious showpiece that will continually impress. Ruby gemstones totaling 40.0 carats alternate with 6.50 carats of sparkling Diamond accents...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

0.31 Carat Diamond 14 Karat Gold Pave Cross Drop “Star of The East” Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14k rose gold Diamonds: round brilliant cuts = 0.31 carat weight Color: H Clarity: SI3 Dimensions: necklace is 30-inch long Weight: 5.35 grams
Category

21st Century and Contemporary Unknown Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Modern 18 Carat White Gold and Diamond Encrusted Pendant Necklace
Located in Chipping Campden, GB
The bright white diamonds are natural, clean stones. They total approx 10carats and this stylish necklace is modelled in 18 carat white gold. The necklace is completely encrusted wit...
Category

Early 2000s British Diamond Necklaces

Materials

Diamond, White Gold

18k Gold 6.44ctw GIA Colombian Emerald & Diamond Halo Statement Pendant Necklace
Located in Montclair, NJ
--Stones:--(1 Natural Genuine Emerald - Octagonal Step Cut - Prong Set - Rich Green Color w/ Natural Inclusions - F2 Clarity - 3.72ct approx. Based on the certification ** See Certif...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

18K Yellow Gold 0.35ct Diamond 4-Strand Pearl Necklace
Located in Southampton, PA
It's impossible not to notice the gorgeous glow of this necklace. This fabulous neckpiece features four strands of 7.5mm pearls finished with a box tab clasp with a diamond-adorned 1...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold, Yellow Gold

Vintage 0.80 Carat Diamond Pendant Necklace For Her
Located in Miami, FL
Crafted from 14k yellow gold, this elegant pendant necklace features a total of 0.80 carats of natural earth-mined diamonds. With VS clarity and F-G color, the diamonds exhibit excep...
Category

21st Century and Contemporary European Medieval Diamond Necklaces

Materials

Diamond, Gold, 14k Gold, Yellow Gold

18 K yellow Gold Black Enamel Diamond link necklace
Located in Zurich, Zollstrasse
A timeless 18 K yellow Gold black Enamel Diamond necklace. 3 links are pave set with brilliant cut Diamonds. The link design features po...
Category

2010s Swiss Contemporary Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Enamel

Pearl & Black Diamond Chain Necklace Made In 18k Gold
Located in New York, NY
18kt:2.66g,D:41.58ct, ,,Pearl:75.05ct
Category

21st Century and Contemporary Indian Art Nouveau Diamond Necklaces

Materials

Pearl, Black Diamond, 18k Gold

14K Yellow Gold 0.10ct Diamond and Onyx Butterfly Necklace
Located in Southampton, PA
Brimming with mystery and sophistication, this onyx butterfly necklace can elegantly complete any outfit. For a striking sparkle, the butterfly...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Necklace with Turquoise and diamonds 18k yellow gold and silver
Located in The Hague, ZH
18k yellow gold necklace with 18k gold with Z2 silver pendant set with turquoise and old mine cut diamond 1.50 ct F/G SI - 40 cm Detailed description the necklace is 40 cm long and...
Category

2010s Dutch Modern Diamond Necklaces

Materials

Diamond, Turquoise, 18k Gold, Yellow Gold, Silver

Blue Sapphire Chain Necklace With Diamonds Made In 18k White Gold
Located in New York, NY
18KT:26.556g,D:1.38ct, SAPP:5.25ct,
Category

21st Century and Contemporary Indian Contemporary Diamond Necklaces

Materials

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

18K, 1.25 CT diamond, ruby and sapphire Heart Pendant
Located in Miami, FL
Fashioned from exquisite 18K yellow gold, this pendant boasts a total of 0.75 carats of dazzling diamonds, showcasing VVS clarity and F color for unparalleled brilliance. Adding to i...
Category

21st Century and Contemporary European Medieval Diamond Necklaces

Materials

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

Captivating 18K Rose Gold Natural Diamond Necklace w/0.70ct - GIA Certified
Located in רמת גן, IL
Captivating 18K Rose Gold Natural Diamond Necklace w/0.70ct This captivating necklace showcases a stunning 0.70 carat natural diamond. The delicate 18K rose gold chain, measuring 4...
Category

2010s Israeli Diamond Necklaces

Materials

Diamond, 18k Gold, Rose Gold

14K Yellow Gold 0.10ct Diamond Necklace
Located in Southampton, PA
This carefully crafted 14K yellow gold necklace is simple, elegant, and understated. At the center of the 16 chain, youll find a teardrop shaped pendant that comes to life thanks to ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

14K Yellow Gold 0.25ct Diamond Bar Necklace
Located in Southampton, PA
A glittering jewel you can effortlessly take from office to dinner. This trendy piece features a 15 long chain with two bezel-set round diamond stations and a lobster clasp. It holds...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Natural Uncut Diamond Necklace Crafted in 18 Karat Solid Yellow Gold for Her
Located in Houston, TX
Natural Uncut Diamond Necklace in 18K Gold studded with pear cut diamond. This stunning piece of jewelry instantly elevates a casual look or dre...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Platinum 1.51ct Diamond and Royal Blue Sapphire Necklace
Located in Southampton, PA
This impressive necklace features a classic design that will never go out of style. Suspended from the sleek 18 box chain is a platinum pendant measuring 0.85 long by 0.50 wide. Diamond accents totaling 1.51 carats provide plenty of sparkle, but its the captivating 2.03 carat GRS Certified Royal Blue Sri Lanka Sapphire...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Diamond South Pearl necklace 18" 13mm-16mm 14KT
Located in Boca Raton, FL
Stunning pearl necklace with gold south sea pearls 13-16mm 18" long with 0.40ct of diamonds in 14Kt gold! Certificate of authenticity comes with purchase! ABOUT US We are a family-...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Pearl, 14k 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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