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Diamond Necklaces

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Gemstone: Diamond
Beautiful Diamond Pendant w Earth Mined Diamonds in Solid 14K White Gold
Located in Columbus, OH
This beautiful pear shape pendant features 29 natural earth mined diamonds of 0.13 carat weight set in solid 14K gold. This pendant makes a lovely April birthstone gift for your love...
Category

2010s American Modern Diamond Necklaces

Materials

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

AIG Certified 77.00 Cts Tourmaline Rubellite 6.50 Cts Diamonds 18K Gold Necklace
Located in Massafra, IT
An exquisite Tourmaline Rubellite and Diamonds necklace , sparkled with elegance, catching the light and reflecting vibrant light . Interspersed with dazzling diamonds , the necklace...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Tourmaline, 18k Gold

Edwardian gold & diamonds necklaces
Located in PARIS, FR
BELLE EPOQUE NECKLACE WHITE GOLD & OLD-CUT DIAMONDS 1.35 CT 18Kt (750°/°°) white gold and platinum necklace set in pendeloque with an “old european cut” old-cut diamond weighing app...
Category

1910s French Edwardian Vintage Diamond Necklaces

Materials

Diamond, Gold, Platinum

Yellow Gold Diamond Ribbon Heart Pendant 14k Round & Baguette .65ctw Love Wreath
Located in Greensboro, NC
Metal Content: 14k Yellow Gold & 14k White Gold Stone Information Natural Diamonds Carat(s): .65ctw Cut: Round Brilliant & Baguette Color: G - H - I Clarity: SI1 - I1 Total Carats...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Natural 1.03 Carat Marquise Diamond Choker Necklace 14 Karat Yellow Gold Jewelry
Located in IN
Cast from 14-karat White gold, these exquisite choker are handset with 1.03 carats of sparkling diamonds. FOLLOW SPECTRUM JEWELS storefront to view the latest collection & exclusive...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, Yellow Gold, 14k Gold

Diamond Rainbow Sapphire Art Deco Style Pendant in 18K White Gold
Located in Bangkok, TH
Discover our new collection ‘Be Elegance Over the Rainbow’ and celebrate the life that full of colors! This Art-Deco pendant is completely spectacular! The vibrant color stone (you c...
Category

21st Century and Contemporary Thai Art Deco Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold, White Gold

1.45 Carat Pear Diamond Choker Necklace 14 Karat White Gold Handmade Jewelry
Located in IN
Cast from 14-karat White gold, these exquisite choker are handset with 1.45 carats of sparkling diamonds. FOLLOW SPECTRUM JEWELS storefront to view the latest collection & exclusive...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold

Real 1.85 Carat Pear Diamond Snake Choker Necklace 14 Karat White Gold Jewelry
Located in IN
Cast from 14-karat Yellow gold, these exquisite choker are handset with 1.85 carats of sparkling diamonds. FOLLOW SPECTRUM JEWELS storefront to view the latest collection & exclusiv...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold

1.45 Carat Pear Diamond Choker Necklace 14 Karat Yellow Gold Handmade Jewelry
Located in IN
Cast from 14-karat Yellow gold, these exquisite choker are handset with 1.45 carats of sparkling diamonds. FOLLOW SPECTRUM JEWELS storefront to view the latest collection & exclusiv...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, Yellow Gold, 14k Gold

Boucheron 18K Yellow Gold Diamond Serpent Boheme Pendant
Located in Naples, FL
Indulge in the captivating allure of the Boucheron Diamond Serpent Boheme Pendant necklace, a testament to timeless elegance and exquisite craftsmanship. Suspended from a 20-inch cha...
Category

2010s French Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Pendant Necklace with Citrine & Diamonds in 18 Karat Yellow Gold
Located in Lucerne, CH
This exquisite pendant necklace is a true masterpiece of jewelry artistry. Crafted in 18 Karat yellow gold, it features a pendant with an openwork ornament reminiscent of a beautifu...
Category

20th Century Swiss Artist Diamond Necklaces

Materials

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

Sterling Silver White Diamonds Mirror Pendant
Located in New York, NY
This enchanting Sterling Silver mirror pendant is a unique and captivating piece that blends elegance with a touch of whimsy. The pendant features a beautifully crafted mirror with a...
Category

2010s American Diamond Necklaces

Materials

White Diamond, Sterling Silver

Links of London Diamond Globe Trotter Charm Pendant
Located in London, GB
Here we have an 18ct yellow gold charm from the world-renowned retired British jewellery designer, Links of London. This particular piece has been crafted into the shape of a lady 'G...
Category

21st Century and Contemporary English Contemporary Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Lovely 0.23ct Pearl Pendant with Diamonds in 18K White Gold - Pendant Only
Located in רמת גן, IL
This captivating pendant offers a timeless and sophisticated design. Crafted from gleaming 18K white gold, it features a stunning white pearl as the centerpiece, its special cut addi...
Category

2010s Singaporean Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold, White Gold

Vintage Circa 1990s 18k Gold Natural Baguette Cut Diamond And Pearl Pendant
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 9.4 grams. Totally is diamond 0.40 ct. The diamond is has H color and vs-s1 clarity. Total lenght is chain 42 cm. Please contact for any quest...
Category

1990s European Retro Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold

Captivating Heart Shaped Jade w/ Side Diamonds in 18K Yellow Gold - Pendant Only
Located in רמת גן, IL
This charming 18k yellow gold pendant showcases a touch of timeless elegance. This delightful piece features a captivating heart-shaped jade stone, its verdant green hue adding a tou...
Category

2010s Singaporean Diamond Necklaces

Materials

Diamond, Jade, 18k Gold, Yellow Gold

2.46ct Royal Blue Sapphire Diamond Necklace By MOISEIKIN
Located in Hong Kong, HK
There are scales in music Sound, And there are colour schemes. These are vibrations of sound and colour, these are waves that penetrate everything around them and connect people and ...
Category

2010s Thai Contemporary Diamond Necklaces

Materials

Diamond, Emerald, Sapphire, Ruby, Blue Sapphire, Tsavorite, 18k Gold, Wh...

Stunning 4.53ct Diamond Pendant in 18K Yellow Gold
Located in רמת גן, IL
Prepare to be mesmerized by this exceptional pendant, a true statement piece crafted from luxurious 18K yellow gold. The centerpiece of this stunning creation is a single, magnificen...
Category

2010s Singaporean Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Garavelli White Gold Bolt Pendant with chain, with rubies and black diamond
Located in Valenza, IT
Garavelli White Gold Bolt Pendant with chain, with rubies and black diamonds from New Giotto Collection. 18kt white gold pendant, set in rubies, featuring a central black diamond. P...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

Black Diamond, Ruby, White Gold

5ct Rutilated Quartz Pendant w Earth Mined Diamonds in Solid 14K Gold Oval 13x10
Located in Columbus, OH
This beautiful pendant features a 5.18 carat emerald cut Rutilated Quartz with a traid of natural earth mined diamonds on top, all set in solid 14k gold. This Rutilated Quartz pendan...
Category

2010s American Modern Diamond Necklaces

Materials

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

Cartier Vintage Diamond Pendant Necklace
Located in London, GB
Here we have a stylish diamond necklace from the world renowned jewellery house of Cartier. This vintage piece has been crafted from 18ct yellow gold and features four pear shaped mo...
Category

20th Century French Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

18k Black and White Diamond Tassel Necklace
Located in New York, NY
Add elegance to your outfit with our 18k Black and White Diamond Tassel Necklace. Crafted in 18k white gold, this 16 inch chain features a stunning 3 inch pendant adorned with 1.39 c...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Ruby and Diamond Necklace and Earring Set
Located in New York, NY
A FABULOUS suite! Over 40 carats of Ruby and 18 carats of white diamonds set in 18k yellow gold. 17 inch necklace length. Earrings are 1.5 inches long. A unique and timeless...
Category

Late 20th Century Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold

18k Diamond and Pink Sapphire Necklace
Located in New York, NY
Crafted from 18k white gold, this stunning necklace features 3.15 carats of diamonds and 11.44 carats of pink sapphire on a 14.5 inch chain. In excellent condition with minor surface...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Pink Sapphire, Gold, 18k Gold, White Gold

18k Diamond and Yellow Sapphire Butterfly Necklace
Located in New York, NY
Look at this adorable 18k Diamond and Yellow Sapphire Butterfly Necklace! Crafted in 18k white gold, this stunning necklace features a delicate butterfly pendant adorned with sparkli...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

2.8ct Arizona Peridot Pendant w Earth Mined Diamonds in Solid 14K Gold Oval 10x8
Located in Columbus, OH
This beautiful pendant features a 2.88 carat oval Arizona Peridot gemstone with a triad of natural earth mined diamonds set in solid 14K gold. This Peridot pendant makes a lovely Aug...
Category

2010s American Modern Diamond Necklaces

Materials

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

14k Diamond Pendant Necklace
Located in New York, NY
Showcasing our stunning 14k Diamond Pendant Necklace. Crafted with 14k white gold and adorned with 0.30 carats of sparkling diamonds.The chain is 16 inches and the pendant is 0.60 in...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Gold, 14k Gold, 18k Gold, White Gold

Art Deco Pendant Necklace with Diamonds & Pearl in Platinum 950
Located in Lucerne, CH
The pendant, an Art Deco masterpiece, is designed from fine platinum, intricately woven like a delicate, precious web. Adorned with 89 brilliant-cut diamonds, H-I in color and vs-s...
Category

Early 20th Century European Art Deco Diamond Necklaces

Materials

Diamond, Pearl, Cultured Pearl, Platinum

6.6ct Ametrine Pendant w Earth Mined Diamonds in Solid 14K White Gold CU 14x10mm
Located in Columbus, OH
This beautiful pendant features a stunning 6.61 carat cushion cut Ametrine with natural earth mined diamonds set in solid 14K gold. This pendant makes a lovely birthstone gift for Fe...
Category

2010s American Modern Diamond Necklaces

Materials

Amethyst, Citrine, Diamond, Gold, 14k Gold, White Gold

18k Diamond and Synthetic Sea Foam Agate Pendant Necklace
Located in New York, NY
Beautiful 18k Diamond and Stone Necklace Pendant weighs 14.8 grams. The necklace consists of an 18 inch chain that can e shortened to 15.5 inches and the pendant consisting of sparkl...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

18k Multi Colored Diamond Pendant Necklace
Located in New York, NY
Look at this beauty of our 18k Multi Colored Diamond Pendant Necklace. With 1.96 carats of dazzling white diamonds and 2.66 carats of multi colored diamonds, this necklace is a true ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

18k Diamond and Sapphire Butterfly Pendant Necklace
Located in New York, NY
This stunning 18k Diamond and Sapphire Butterfly Pendant In good condition with minor surface wear, the 18-inch chain showcases a 0.90 inch x 1 inch pendant adorned with 0.14 carats...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

18k Blue and White Diamond Pendant Necklace
Located in New York, NY
Indulge with our 18k Blue and White Diamond Pendant Necklace! With a 16 inch chain and 1.40 inch pendant, this piece is crafted from 18k white gold and adorned with 0.44 carats of sp...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

18k Diamond and Ruby Heart Pendant Necklace
Located in New York, NY
Add a touch of elegance to your collection with our 18k Diamond and Ruby Heart Pendant Necklace. Crafted from 18k white and rose gold, this stunning necklace features a 17 inch chain...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Yellow and White Gold Heart Pendant with Diamonds
Located in Esch sur Alzette, Esch-sur-Alzette
The Yellow and White Gold Heart Pendant with Diamonds is a symbol of love and elegance, crafted with meticulous attention to detail. Made from luxurious 18kt yellow and white gold, t...
Category

20th Century Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Dazzling 2.00ct Black & White Diamonds Pendant in 18K White Gold - Pendant Only
Located in רמת גן, IL
A stunning 18k white gold pendant meticulously crafted to showcase a breathtaking display of 181 sparkling diamonds. The centerpiece features 81 round brilliant diamonds boasting a t...
Category

2010s Singaporean Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

3ct Tanzanite Pendant w Earth Mined Diamonds in Solid 14K White Gold CU 10x8mm
Located in Columbus, OH
This beautiful pendant features a 3.03 carat cushion cut tanzanite with natural earth mined diamonds and milgrain detail, all set in solid 14K gold. This Tanzanite pendant makes a be...
Category

2010s American Modern Diamond Necklaces

Materials

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

0.20 Carat Natural Pink Heart Shaped Diamond Pendant
Located in Chicago, IL
This is an 18 karat white and pink gold dazzling diamond pendant. It features a 0.22 carat natural pink heart-shaped diamond from Australia in the center, framed by a rose gold thin ...
Category

Early 2000s American Contemporary Diamond Necklaces

Materials

Pink Diamond, Diamond, 18k Gold

The Phoenix Necklace in 22k Yellow Gold by Judy Kensley McKie
Located in Great Barrington, US
The techniques of chasing and repousé employed in creating these pieces are among the oldest used in the fashioning of gold into jewelry. While these techniques were used throughout ...
Category

Early 2000s American Artisan Diamond Necklaces

Materials

Diamond, 22k Gold

Chopard Happy Heart Diamond White Gold Pendant Necklace
Located in Newton, MA
Chopard "Happy Diamonds" white gold and diamond heart pendant offered by Alex & Co. This iconic heart shaped 18K white gold pendant features a border of 25 round brilliant cut pave s...
Category

20th Century Swiss Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

AIG Certified 65.00 Carats Zambian Emeralds 9.00 Ct Diamonds 18K Gold Necklace
Located in Massafra, IT
A magnificent piece of art , so sophisticated, refined and glamour designed by Italian artist. Stunning Necklace come in 18K gold with 11 pieces of natural Zambian Emeralds , fine qu...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

14K Gold Diamond Evil Eye Pendant
Located in New York, NY
Adorn yourself with luxury and a touch of spiritual symbolism with our Diamond Evil Eye Pendant. Crafted in 14K Gold, this dainty and feminine piece features diamonds set in a spirit...
Category

2010s Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

18K Diamond and Emerald Necklace
Located in New York, NY
Add a touch of elegance to any outfit with our 18K Diamond and Emerald Necklace. This beautiful piece features a delicate 14 inch chain and a stunning 3.5 inch pendant made of 18k wh...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

LUCE necklace in rose gold and brilliant-cut diamonds
Located in Milano, IT
Bracelet made by Busatti Milano, a historic Italian maison renowned for its innovative designs. In the LUCE collection, purity of design meets diamond light. LUCE reinterprets classi...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

White Diamond, 18k Gold

LUCE necklace in white gold and brilliant-cut diamonds
Located in Milano, IT
Necklace made by Busatti Milano, a historic Italian fashion house renowned for its innovative designs. In the LUCE collection, purity of design meets diamond light. LUCE reinterprets...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

White Diamond, 18k Gold

18k White and Yellow Diamond Butterfly and Flower Necklace
Located in New York, NY
This gorgeous necklace features a stunning 18k white and yellow gold butterfly and flower pendant, adorned with 1.94 carats of sparkling diamonds. With a 15.5 inch chain and a weight...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Estate Deco 18K Cabochon Coral Carved Onyx Diamond Y-Drop Necklace 16” G Vs
Located in Winter Springs, FL
A stunning and bold necklace done in the Art Deco style but newly made. It has been crafted in 18K white gold and set with coral pear shaped cabochons as well as carved onyx and app...
Category

21st Century and Contemporary Unknown Art Deco Diamond Necklaces

Materials

Coral, Diamond, Onyx, 18k Gold, White Gold

Moi Cairo Gold Silver Diamond Sapphire and Quartz Necklace
Located in Lawrenceville, GA
Diamonds. Yellow and orange sapphires. Cognac Quartz. Crafted in 925 silver and 14K gold. An exquisite piece, Cairo is impactful enough for evening and subtle enough for every day. ...
Category

21st Century and Contemporary Indian Diamond Necklaces

Materials

Diamond, Quartz, Sapphire, 14k Gold, Silver

Natural 2.32 Carat Diamond Circle Pendant Necklace 18 Karat White Gold Jewelry
Located in IN
Cast from 18-karat gold, these exquisite necklace is handset with 2.32 carats of sparkling diamonds. FOLLOW SPECTRUM JEWELS storefront to view the latest collection & exclusive piec...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Vintage 0.25 Carat Old Cut Diamond Solitaire Necklace
Located in London, GB
Here we have a charming vintage diamond solitaire necklace. A single round faceted old cut diamond sits alone and proud in a fine mi...
Category

20th Century Diamond Necklaces

Materials

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

Moi Wisdom Gold Silver Diamond Brooch and Pendant
Located in Lawrenceville, GA
Gold(14K) : 6.0g Diamonds : (SI clarity & H-I colour) : (Brilliant cut) : 0.55ct Rose-cut Diamond : 2.20ct Gemstone : Green Onyx, Mica 925 Silver Other : Blue Enamel and Black Silk T...
Category

21st Century and Contemporary Indian Diamond Necklaces

Materials

Diamond, Onyx, 14k Gold, Silver, Enamel

18k Diamond Heart Pendant Necklace
Located in New York, NY
introducing this stunning 18k Diamond Heart Pendant Necklace. Crafted in high-quality 18k white gold, and featuring 1.45 carats of diamonds. The chain is 15.5 inches and the piece is...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.70 Carats Rubellite Diamonds set in 14K White Gold Pendant
Located in Los Angeles, CA
The elliptical setting of this 14K White Gold pendant prominently displays 0.70 carats of natural Rubellite and envelops it in spectacular white diamonds. While it may look delicate ...
Category

21st Century and Contemporary Brazilian Diamond Necklaces

Materials

Diamond, Rubelite, 14k Gold, White Gold

Garavelli White Gold Pave Diamonds Circle Pendant with chain, Giotto Collection
Located in Valenza, IT
Garavelli White Gold Pave Diamonds Circle Pendant with chain from New Giotto Collection. 18kt white gold pendant, set in white diamonds pavè., featuring carat 0.18 in 7 white diamond...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, White Gold

22K Gold NavaRatna Reversible Pendant Necklace
Located in Nantucket, MA
A 22K gold pendant with precious and semi-precious gemstones depicting the Nava Ratna mythology on one side and kundan gold and enamel work depicting flowers on the reverse. The pend...
Category

Mid-20th Century Indian Diamond Necklaces

Materials

Ruby, Hessonite, Cat’s Eye, Yellow Sapphire, Blue Sapphire, Pearl, Emera...

18k Diamond Necklace
Located in New York, NY
Showcasing our 18k Diamond Necklace! This stunning piece boasts a 15 inch chain and a sparkling 0.40 inch pendant, all crafted from 18k white gold. With a weight of only 3.6 grams, t...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

14K Yellow Gold Diamond Bar Necklace
Located in Houston, TX
Diamond Bar Necklace in 14K Gold studded with round cut diamond. This stunning piece of jewelry instantly elevates a casual look or dressy outfit. April birthstone diamond brings lo...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Yellow Gold, 14k Gold, Gold

Necklace, 925 sterling silver, natural diamonds ct 0.015, 18kt gold plated
Located in Capri, IT
In Paris at the Ritz bar at No. 15 it's customary for some friends to meet and spend time telling each other stories, a pleasant rendezvous characterized by smiles, excitement, curio...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Gold Plate, Sterling Silver

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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