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Diamond Necklaces

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Item Ships From: USA
Gemstone: Diamond
Tanzanite and White Diamond Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful big tanzanite trillion with white diamond rounds. Handmade in 18k yellow gold. Chain is 16".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Tanzanite, Yellow Gold

Roberto Coin Circle of Life Pendent with Diamond Flower 8883002AYCHX
Located in Wilmington, DE
Roberto Coin Love in Verona Circle of Life Pendent with Diamond Flowers 18k Yellow Gold Diamonds 0.07 total weight Pendent Measure 20mm Chain measure 17" long with two additional...
Category

2010s Diamond Necklaces

Materials

Diamond, Yellow Gold, 18k Gold

Alexander 3.54ctt Fancy Color Diamond Drop Necklace 18k White & Yellow Gold
Located in BEVERLY HILLS, CA
Exquisite heart shape fancy color diamond drop pendant necklace with double diamond halos, by Alexander Beverly Hills. 3 heart shape diamonds ranging from Fancy Yellow to Fancy Brown...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Yellow Diamond, Brown Diamond, Diamond, White Diamond, Gold, Yellow Gold...

14k White Gold & Pear Diamond Halo Pendant Necklace 1.17ct
Located in Tustin, CA
We are pleased to present this 14k White Gold & Pear Diamond Halo Pendant Necklace. This cute piece features a 0.93ct I-J/I1-I2 pear cut diamond set ...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

0.3 Carat Diamond Moonlight Round Cluster Pendant in 14K Yellow Gold
Located in New York, NY
Elevate your style with our exquisite 0.3 carat total weight Moonlight Round Cluster Pendant, fashioned in elegant 14K yellow gold weighing 0.84 grams. This pendant is a captivating ...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, Yellow Gold, 14k Gold

14K Gold Tobago Multi Charm Pendant
Located in Scottsdale, AZ
Beautiful 14K gold pendant that features two hearts, a Tobago charm and a diamond. The shape of this pendant is so unique. Pair it with a leather chord to edge it up or a sleek Herme...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, 14k Gold

2.67 Carat Diamond Pave Hamsa Pendant 14 Karat in Stock
Located in Boca Raton, FL
Disclaimer: This listing is for the pendant ONLY Material: 14k Yellow Gold Diamond Details: Approx. 2.67ctw of round cut Diamonds. Diamonds are G/H in color and SI/VS in clarity, 281...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, White Diamond, 14k Gold, Yellow Gold

14 Karat Rose Gold Floating Diamond Flower Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K rose gold Diamond: 37 round brilliant cut = .36cttw Color: G Clarity: SI1 Dimensions: necklace measures 18-inches in length Weight: 4.60 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

TIFFANY & Co. Etoile 18K Gold Diamond Circle Pendant Necklace
Located in Los Angeles, CA
TIFFANY & Co. Etoile 18K Gold Diamond Circle Pendant Necklace Metal: 18K Gold Weight: 5.30 grams Chain: 16" long Pendant: 13mm in diameter Diamond: 6 round brilliant diamonds, cara...
Category

2010s Diamond Necklaces

Materials

Diamond, 18k Gold

14 Karat Yellow Gold Black Opal and Diamond Slide Pendant
Located in Scottsdale, AZ
Designer: custom Material: 14K yellow gold Diamond: 3 round cut = .05cttw Color: G Clarity: SI1 Dimensions: pendant measures 11 X 5.85mm Weight: 2.36 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Black Opal, 14k Gold, Yellow Gold

Tanzanite and White Diamond Pendant Necklace in 14k Yellow Gold
Located in Los Angeles, CA
Beautiful 3.75 ct. tanzanite oval with 0.30 ct. white diamond baguettes. Handmade in 14k yellow gold. Chain is 18".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Tanzanite, Yellow Gold

Natural Persian Turquoise Diamond Gold Necklace 15.32 TCW Certified
Located in Brooklyn, NY
Natural Persian Turquoise Diamond Gold Necklace 15.32 TCW Certified $15,950 211937 Nothing says, “I Love you” more than Diamonds and Pearls!...
Category

2010s American Diamond Necklaces

Materials

Diamond, Turquoise, Gold

9.5 TCW Diamond Tennis Necklace In White Gold , 22 inches
Located in Miami, FL
Introducing our Tennis Necklace , a stunning accessory that combines elegance and sophistication . Crafted with precision, this necklace is set in 18 K white gold , adding a touch of...
Category

21st Century and Contemporary Unknown Diamond Necklaces

Materials

Diamond, White Gold

2.00 Ct Fancy Light Yellow Pear Shape Diamond Pendant Necklace
Located in New York, NY
Center stone: 2.00 ct Fancy Light Yellow VS2 Pear Shape cut natural diamond. Measurements: 11.2 x 6.7 mm. Side stones: 12 Pear Shape cut diamonds D-E-F SI1/SI2. Measurements: 4.30 x ...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum

14 Karat White Gold Diamond Cross Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K white gold Diamonds: 11 round brilliant cut = 0.90cttw Color: G Clarity: SI1-2 Dimensions: necklace measures 18-inches in length Weight: 6.20 ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

0.63 Ct Emerald 0.12 Ct Diamond 14K Yellow Gold Drop Pendant Necklace
Located in Los Angeles, CA
100% Authentic, 100% Customer Satisfaction Pendant: 33 mm Chain: 0.03 mm Size:18 Inches Metal: 14K Yellow Gold Hallmarks: 14K Total Weight: 2.4 Grams Stone Type: 0.63 CT Natural Emerald & Diamond 0.12 CT G SI1 Condition: New With Tag "Comes in a nice Box" Estimated Price: $1200 Stock Number: N214
Category

2010s American Diamond Necklaces

Materials

Diamond, 14k Gold

Lady's Opal and Diamonds Necklace in 14k Yellow Gold
Located in New York, NY
One lady's 2 black opal in blue-green fire color. Average saturation scale with pin fire pattern. Brightness of fire is bright with cabochon, pear shape. Measurements are 39.0 x 27.0...
Category

1970s American Art Deco Vintage Diamond Necklaces

Materials

Diamond, Opal, 14k Gold, Yellow Gold

18 Karat Yellow Gold Diamond Tennis Racket Pendant
Located in New York, NY
18 Karat Yellow Gold Diamond Tennis Racket Charm, Tiffany designer Thomas Kurilla could not resist. Love, set, match! I just made this for myself , because pendants work for me! ...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Round Brilliant GIA Diamond on White Gold Chain 14 Karat in Stock
Located in Boca Raton, FL
Material: 14k white gold Diamond Details: 0.90ctw of Brilliant Round Cut Diamond. Diamond is G/H in color and VS in clarity. SI1 GIA# 1363714574 Measurements: Necklace is 16"  in len...
Category

21st Century and Contemporary Unknown Diamond Necklaces

Materials

Diamond, White Gold

Swarovski Butterfly Pendant
Located in New York, NY
A modern interpretation of a butterfly featuring intersecting curved rows of diamonds. - 18K white gold - Blue topaz and diamond - Adjustable length: 43 (40+3) cm - Pendant 0.6"x0.5" New without Tags (never worn) *Includes an original Swarovski box...
Category

2010s Diamond Necklaces

Materials

Diamond, Blue Topaz, 18k Gold

GIA Certified .30 Carat Sapphire Diamond Pearl Butterfly Pendant Necklace
Located in Stamford, CT
Diamond, pearl and sapphire butterfly pendant necklace. GIA certified natural no heat blue sapphire accented with natural peal, genuine ruby and old mine cut diamond accents. White, ...
Category

Mid-19th Century Antique Diamond Necklaces

Materials

Diamond, Pearl, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold, Yel...

Diamond Baroque Freshwater Pearl Necklace 14k Gold Italy Certified
Located in Brooklyn, NY
Fine Quality Baroque Freshwater Pearl Diamond Necklace 14k Gold Italy Certified $3,490 914644 This is a Unique Custom Made Glamorous Piece of Jewelry! MADE IN ITALY Nothing says, ...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Pearl, Freshwater Pearl, 14k Gold, White Gold

1.40 Carat Total Red Ruby and Diamond Pendant Necklace in Rose Gold
Located in New York, NY
Floral motif pendant necklace featuring a vibrant pear shape ruby approximately weighing at 0.62 carats, accented by mixed shape diamonds that weigh about 0.78 carat, FGG color and V...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, Ruby, Rose Gold

18K Yellow Gold Diamond Heart Necklace 3.22 Cts
Located in Dallas, TX
Beautiful heart pendant with 20 round brilliant diamonds set in 18K Yellow gold. Weighing 3.22 cts. Clarity VS/SI1. Color H . Length 22 inches with 2" extender. Total weight 11.9 gr...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, Yellow Gold

Antique Art Deco Diamond Platinum Filigree Bar Brooch Pin
Located in Miami, FL
This authentic antique bar brooch of the classic allure is crafted in solid platinum and exposes an eminent 1.40 ct old European-cut diamond at the center, graded I color, VS2 clarit...
Category

1930s Art Deco Vintage Diamond Necklaces

Materials

Diamond, Platinum

Vintage Ruby and Diamond Gold Necklace Estate Fine Jewelry
Located in Montreal, QC
Simply Fabulous! Beautiful Finely detailed Red Ruby and Diamond Necklace. Hand set with Rubies, weighing approx. 2.90tcw and Diamonds, ap...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

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

Mid-20th Century Diamond Necklaces

Materials

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

18kt White Gold Diamond, Pink Sapphire, and Blue Sapphire Pendant, 15 in, New
Located in Rancho Santa Fe, CA
NEW, Contemporary 18kt white gold diamond, vibrant pink sapphire, and blue sapphire designer pendant on a blue silk rope necklace that has an 18kt w...
Category

2010s Lebanese Contemporary Diamond Necklaces

Materials

Blue Sapphire, Pink Sapphire, Diamond, White Gold

EGL Certified 2 Carat Heart Shaped Diamond Pendant 14K White Gold
Located in beverly hills, CA
This minimalist 4 prong pendant showcases a beautiful EGL certified 2 carat diamond. The heart shape diamond sparkles in G color and VS 2 clarity. The necklace measures 15 inch long...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

33.09 Carat Round Graduating Diamond Tennis Necklace Platinum
Located in Boca Raton, FL
Material: Platinum Diamond Details: Approx. 33.09ctw of round cut Diamonds. Diamonds are I in color and VS2 in clarity Clasps: Tongue in box with safety latch Total Weight: 61.5g (39...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, White Diamond, Platinum

Piero Milano Natural Diamond Heart Lock & Key Necklace 18k White Gold 0.09cctw
Located in New York, NY
This is an 18k White Gold Piero Milano Heart Lock & Key Necklace. Sparkling Round Diamonds Adorn the Dangling Key along with a White Gold Heart Necklace. Crafted of 18K White Gold, t...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, White Gold

Roman Malakov 1.94 Carat Total Pear and Heart Shape Fancy Color Pendant Necklace
Located in New York, NY
This beautiful pendant necklace showcasing a GIA Certified 1.69 carat pear shape light yellow diamond suspended on a GIA Certified 0.25 carat heart shape fancy blue pink diamond...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum, Yellow Gold

Sorab & Roshi Fluorite Bead Necklace with Faceted Blue Topaz Bead Accent
Located in Greenwich, CT
Two strands of nesting nugget shape Fluorite bead Necklace with faceted round blue Topaz bead accent on an 18 karat white gold box clasp enhanced with bl...
Category

21st Century and Contemporary North American Contemporary Diamond Necklaces

Materials

Diamond, Pink Sapphire, Blue Topaz, Fluorite, 18k Gold, White Gold

Roman Malakov, Radiant Cut Yellow Diamond Halo Pendant Necklace
Located in New York, NY
This beautiful 1.04 carat radiant cut yellow diamond, set by yellow gold prongs, is surrounded by brilliant round diamonds. Hanging by a dia...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Yellow Diamond

21.84 Carat Blue Sapphire and 9.27 Carat Diamond Opera Necklace
Located in New York, NY
18k White Gold, Diamond & Blue Sapphire Necklace, Marquise design with multi-shaped pink sapphire clusters in pronged setting Pave diamond border and chain. Tab insert with safety cl...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

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

Rachel Koen 18k Rose Gold Diamond Hamsa Ladies Pendant 0.47cttw
Located in New York, NY
The Star of David sign and the Hamsa symbols are unified in this majestic pendant that features 0.47 brilliant round white diamonds in micro pave setting. Crafted in 14k rose gold. D...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Rose Gold

14K White Gold 0.198 Ctw Natural Diamond, 0.139 Ctw Black Diamond Charm Pendant
Located in Jaipur, RJ
Item details:- ✦ SKU:- JPD00157WWW ✦ Material :- Gold ✦ Metal Purity : 14K White Gold ✦ Gemstone Specification:- ✧ Clear Diamond Round (l1/H1) - 1.30mm - 20 Pcs ✧ Real Black Dia...
Category

2010s Indian Modern Diamond Necklaces

Materials

Black Diamond, Diamond, White Gold, 14k Gold

14 Karat Yellow Gold Women's Diamond Tennis Racket Charm
Located in New York, NY
14 Karat Yellow Gold Diamond Tennis Racket Charm, Summer is here. Get back into the swing of things. So much Love to go around on and off the courts. Gift yourself for the fabulous ...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Roman Malakov 0.32 Carats Oval Cut Ruby with Round Diamonds Pendant Necklace
Located in New York, NY
A fashionable and beautiful piece of jewelry showcasing a 0.32 carats color-rich oval cut ruby, set in an intricately sunburst design accented with br...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Rachel Koen 0.09cttw Round Cut Diamond Cross Pendant 14k Yellow and White Gold
Located in New York, NY
This meaningful cross pendant shines in lustrous 14K yellow gold. Features a textured cross with a center prong set round brilliant cut diamond weighing 0.09 carat. Pendant size: 33m...
Category

2010s Modern Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

10 Karat Yellow Gold with Sapphire and Diamond Charm / Heart Pendant
Located in Stamford, CT
10 Karat Yellow Gold Charm/Heart Pendant with Blue Sapphires and Diamonds. 4.1 grams total weight.
Category

2010s Modern Diamond Necklaces

Materials

Diamond, Blue Sapphire, 10k Gold

AGL Certified 30.07 Carat Sugarloaf Emerald and Yellow Diamond Pendant
Located in New York, NY
A rare piece of jewelry showcasing a sugarloaf cabochon emerald, set in a micro-pave yellow diamond mounting made in 18k yellow gold. Foldable bale. AGL certified pyramidal cabochon ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Yellow Diamond, Emerald, 18k Gold, Yellow Gold

Aphrodite Salt and Pepper Diamond Pendant, by Tagili
Located in New York, NY
The Aphrodite diamond rose cut pendant features 19 rose cut diamonds scattered throughout in an organic 22k gold setting. Complete with Tagili Designs signature finish, hand made and...
Category

2010s American Artisan Diamond Necklaces

Materials

Diamond, 22k Gold

Louis Newman & Co GIA Diamond Straight Line Tennis Necklace with 25.24 Carats
Located in New York, NY
Every Diamond was picked to match in this one of a kind Piece. Average diamond weight 0.30 carats with 25.24 carats total. Custom made 18K White Gold 3 Prong setting with 84 Round D...
Category

2010s Diamond Necklaces

Materials

Diamond, White Diamond, White Gold, 18k Gold

Andreoli Diamond Sapphire 18 Karat Gold Cross Necklace
Located in New York, NY
Andreoli Diamond Sapphire 18 Karat Gold Cross Necklace This necklace features: - 1.60 Carat Diamond - 1.27 Carat Sapphire - 10.65g 18k Two-Tone Go...
Category

2010s Italian Contemporary Diamond Necklaces

Materials

Diamond, Sapphire, Gold, 18k Gold

White Diamond Bezel and Chain Necklace in 14k Rose and White Gold
Located in Los Angeles, CA
Beautiful everyday diamond bezel necklace with 0.16 ct. good quality white diamond rounds. Handmade in 14k rose and white gold.
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Rose Gold, White Gold

Contemporary Art Deco Revival Diamond Lavalier Necklace
Located in New York, NY
This diamond necklace has the stark simplicity, sleek lines, and geometric elements of an opulent piece from the Art Deco period; however, it is made in the 21st century, 2020. Craft...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, 18k Gold

14 Karat Gold Cable Necklace with Ruby and Diamond Soldered Pendant 0.10 TDW
Located in Stamford, CT
14Kt White Gold Cable Necklace W/ Ruby And Diamond Soldered Pendant 0.10 TDW 18 Inch 3.09 grams total weight
Category

2010s Diamond Necklaces

Materials

Ruby, Diamond, 14k Gold

18K Yellow Gold Multi Gemstone Beaded Necklace
Located in Houston, TX
Multi Gemstone Necklace in 18K Gold studded with octagon cut emerald, ruby, sapphire pieces and diamonds. Accessorize your look with this elegant multi gemstone beaded necklace...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Multi-gemstone, Diamond, Emerald, Ruby, Blue Sapphire, Yellow Gold, 18k ...

14 Karat Yellow Gold Crucifix Cross Pendant with .50 Total Diamond Weight
Located in Stamford, CT
14Kt Yellow Gold Crucifix Cross Pendant with .50 Total Diamond Weight. 46.23mm Long. 23mm side and 9 mm thick. 4.46 grams total weight
Category

2010s Diamond Necklaces

Materials

Diamond, 14k Gold

18k Gold Multi Color Sapphire and Diamond Bird of Paradise Brooch and Pendant
Located in Southport, CT
18k white gold brooch. This magnificent brooch is a bird of paradise motif, prong set with a chest of round faceted yellow sapphires that lead into the tail (approximately 1.98 TCW),...
Category

20th Century Unknown Diamond Necklaces

Materials

Agate, Amethyst, Diamond, White Diamond, Garnet, Sapphire, Blue Sapphire...

Victorian Gold Pendant 1.50 Carat Natural Old European Diamond, circa 1910
Located in Los Angeles, CA
Victorian Yellow Gold Pendant, set with 31 approximately 1.50 Carat Natural Old European Diamonds ranging from F-H color and VS-SI in cla...
Category

1910s Unknown Late Victorian Vintage Diamond Necklaces

Materials

Diamond, Gold

Hand-Crafted 14K Yellow Gold Heart Over Cross Pendant
Located in Great Neck, NY
14 Karat Yellow Gold Hand-Crafted Polish-Finished Heart Over Cross Pendant, Accented with 0.04 Carats of Pave Set Diamonds, and Sliding on a 16" Rolo Chain.
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Diamond Drop Necklace
Located in New York, NY
Designed and made in Italy 6.19 carats of round brilliant cut and baguette cut diamonds set in 18k white gold. 16 inch length
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold

0.50 Carat Round Brilliant Cut Diamond Pendant Necklace
Located in New York, NY
Finely crafted in 14k white gold with a Round Brilliant cut diamond weighing 0.50 carats. Made in Italy
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

2.00 Carat Diamond, 18K White Gold Prong Set Curved Necklace
Located in SECACUS, NJ
Elevate her attire with the sizzling look of this graduated diamond necklace. Crafted in cool 18K white gold, this shimmering style features a gently curved row of prong-set diamonds...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

White Diamond and Black Rhodium Medallion Pendant in 18k Gold
Located in Los Angeles, CA
Beautiful 2.13 ct. white diamond rounds in this medallion pendant. Handmade in 18k white gold with black rhodium. Length is 18".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, 18k Gold, Rhodium

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

1980s American Vintage Diamond Necklaces

Materials

Diamond, Emerald, Ruby, Yellow Gold

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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