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Diamond Necklaces

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

2010s American Diamond Necklaces

Materials

Diamond, Blue Sapphire, Platinum

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

2010s Diamond Necklaces

Materials

Diamond, Rose Gold, Platinum

Colorful Diamond, Ruby, & Sapphire Toucan Bird Pendant Brooch 18K White Gold
Located in Boston, MA
Aston Estate Jewelry Presents: A cheerful and bright toucan bird pendant in 18 karat white gold. Set throughout with green garnets, red rubies, yellow sapphires, a blue sapphire eye...
Category

20th Century Diamond Necklaces

Materials

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

Antique Celestial Star Pendant - Brooch Necklace Set in Fitted Case
Located in Danvers, MA
Offered is a beautifully detailed antique gold Celestial themed Pendant - Brooch - Necklace set in a period fitted box. I believe it dates to the Victorian period, though there is a...
Category

Late 19th Century British Victorian Antique Diamond Necklaces

Materials

Diamond, Pearl, 15k Gold, 18k Gold

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

1970s American Vintage Diamond Necklaces

Materials

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

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

1970s American Vintage Diamond Necklaces

Materials

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

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

2010s French Diamond Necklaces

Materials

Diamond, White Gold

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

21st Century and Contemporary Diamond Necklaces

Materials

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

J.E. Caldwell 52.12 CTW Sapphire Diamond Platinum 18K Gold Antique Necklace
Located in Philadelphia, PA
Comprised of 1.5 mm cable link chain centering swagged ribbon, floral, and foliate motif festoon station Featuring graduated pear cut sapphire drops throughout, weighing approximatel...
Category

1910s Belle Époque Vintage Diamond Necklaces

Materials

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

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

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Platinum

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

1990s Japanese Diamond Necklaces

Materials

Diamond, Cultured Pearl, Yellow Gold

Invisible set Ruby with diamond Heart Necklace
Located in Bangkok, TH
Necklace made in 18kt Yellow gold with high quality natural rubies each handpicked of good quality & cut & grooved further to perfection & set on this Necklace full of mysteries. Thi...
Category

2010s Thai Artist Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold

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

1880s Victorian Antique Diamond Necklaces

Materials

Coral, Diamond, 18k Gold, Yellow Gold

VAN CLEEF & ARPELS Flying Beauties Diamond Gold Butterfly Pendant Necklace
Located in New York, NY
This rare and colletible vintage Van Cleef & Arpels necklace from the iconic Flying Beauties collection is crafted in textured 18k yellow gold and accented a solitaire brilliant-cut ...
Category

1970s Vintage Diamond Necklaces

Materials

Diamond, Yellow Gold

Tiffany & Co. Elsa Peretti Open Heart Diamond 18k Yellow Gold Pendant Necklace
Located in Birmingham, GB
Vintage Tiffany & Co. Elsa Peretti Large Open Heart Diamond 18k Yellow Gold Pendant Necklace. A beautiful and rare authentic Tiffany & Co open heart pendant from the stylish and pop...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Edwardian Old Cut Diamond Foliate Scroll Tiara in Silver and Gold
Located in London, GB
A truly elegant Edwardian old cut diamond tiara set in silver and gold, circa 1910. This beautifully handcrafted tiara is composed of a number ...
Category

1910s Swedish Edwardian Vintage Diamond Necklaces

Materials

Diamond, Gold, Silver

Platinum Diamond & Sapphire 1950s Convert. Pendant Dress Clips Earrings Brooch
Located in Towson, MD
This stunning piece, all crafted in platinum, features a 20.10ct vivid blue natural heated sapphire from Sri Lanka, complete with a lab report. It measures 18.71mm long and 14.65mm w...
Category

1950s Vintage Diamond Necklaces

Materials

Diamond, Sapphire, Platinum

Vintage Tiffany & Co. Twisted Ivy Collar Necklace in Platinum
Located in London, GB
A beautiful vintage Tiffany & Co. twisted ‘Ivy’ diamond collar necklace set in platinum. The necklace is composed of 20 individual diamond ivy styled link...
Category

Early 2000s Modern Diamond Necklaces

Materials

Diamond, Platinum

Tiffany & Co. Diamond and Ruby Large Key Pendant Necklace in Polished Platinum
Located in Scottsdale, AZ
This stunning Tiffany & Co. diamond and ruby key pendant is an elegant work of art. Made from lustrous platinum, the key pendant exudes a sense of luxury. At the heart of the key is ...
Category

21st Century and Contemporary Unknown Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Ruby, Platinum

Heart Diamond pendant large size 14KT gold
Located in Jupiter, FL
CENTER STONE: NATURAL DIAMONDS CARAT: 0.64CT CLARITY: SI COLOR: G-H CUT: ROUND GRAM WEIGHT: 2.90gr GOLD: 14KT yellow gold PENDANT ONLY, DOES NOT COME WITH A CHAIN WHAT YOU GET AT...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold

Multi-Shape Diamond Necklace
Located in New York, NY
A unique diamond necklace. 17.19 carats of oval, pear, emerald, marquise and round cut white diamonds set in 18k white gold. 18 inch lengt...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond

Ruby and Diamond Oval Halo Pendant Necklace Set in 18k White Gold
Located in London, GB
A beautiful oval cut ruby and diamond halo pendant set in 18k white gold. The pendant is centrally set with a beautiful coloured red oval cut ruby which is surrounded by 18 sparkly...
Category

2010s Modern Diamond Necklaces

Materials

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

Diamond Pendant 14K White Gold 1.74 cts TDW Hallmarked M
Located in East Brunswick, NJ
Diamond Pendant 14K White Gold 1.74 cts TDW Hallmarked M This gorgeous estate pendant is finely crafted in solid 14K White Gold. The center diamond is .20 carat, 24 surrounding diam...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

.36ctw White Diamond & 1.ctw Brown Diamond Yellow Gold Necklace
Located in Bloomington, MN
.36ctw White Diamond & 1.ctw Brown Diamond Yellow Gold Necklace Introducing this stunning Diamond Fashion Necklace, crafted in exquisite 18kt yellow gold. This piece features .36ctw...
Category

Late 20th Century Diamond Necklaces

Materials

White Diamond, Brown Diamond, 14k Gold, Yellow Gold

Vintage De Beers Diamond Line Riviere Necklace in 18k White Gold
Located in London, GB
A beautiful vintage De Beers diamond riviere necklace set in 18k white gold. The necklace is composed of a staggering total of 218 diamonds all of wh...
Category

2010s Modern Diamond Necklaces

Materials

Diamond, White Gold

2 Carat Ct 1 Brilliant Round Diamond Halo Pendant Necklace in 14k White Gold
Located in New York, NY
Opulent approx. 1.76 carat solitaire round diamond pendant in 14k white gold with necklace chain. A center brilliant round diamond weighing approx. 1.76 carats (natural earth-mined d...
Category

2010s Diamond Necklaces

Materials

Diamond, White Gold

Exquisite Yellow Gold and Diamond Zipper Necklace
Located in New York, NY
Iconic zipper design necklace, set in 18k yellow gold, with a diamond buckle - approximately 1.10ctw H-SI1 diamonds. The necklace has an adjustable wearable length, with a fully func...
Category

20th Century Diamond Necklaces

Materials

Diamond, Yellow Gold

Contemporary Pearl and Diamond Drop Necklace in 18k Yellow Gold
Located in London, GB
A fabulous pearl and diamond pendant necklace set in 18k yellow gold. The pendant prominently features a 10 x 12-millimetre tear drop shaped pearl that elegantly hangs from a diamon...
Category

2010s British Modern Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold, Yellow Gold

Art Deco Prancing Horse Diamond Charm Pendant in Platinum
Located in Boston, MA
Aston Estate Jewelry Presents: An Art Deco period diamond horse charm in platinum. Crafted in stunning lifelike detail, down to the face and plat...
Category

Early 20th Century Art Deco Diamond Necklaces

Materials

Diamond, Platinum

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

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Fred Paris Diamond and 18 Karat Gold Pisces Pendant Necklace
Located in New York, NY
A diamond and 18 karat yellow gold zodiac (Pisces) , short necklace by Fred, Paris. This sophisticated zodiac style pendant features two fish swimming in opposite directions. A won...
Category

1970s French Vintage Diamond Necklaces

Materials

Diamond, Gold

18kt Necklace With 2Ct Pink Amethyst Gemstones Surrounded by 1.02 Ct. Diamonds
Located in Antwerp, BE
Gorgeous 18 kt. White Gold Pendant Necklace with 2 ct. Pink Amethyst and 1.02 ct. Diamonds Diamonds: Brilliant cut diamonds 1.02 ct. Amethyst: 4 beautiful pink amethyst gemstones w...
Category

21st Century and Contemporary Belgian Modern Diamond Necklaces

Materials

Amethyst, Diamond, 18k Gold, White Gold

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

1930s American Art Deco Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

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

1990s Italian Contemporary Diamond Necklaces

Materials

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

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

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Leon Mege GIA Certified 0.70 Carat D/SI1 Diamond Micro Pave Platinum Pendant
Located in New York, NY
GIA-certified 0.70 Carat D/SI1 Diamond Antique cushion diamond surrounded by micro pave diamonds in a delicate bench-made pendant by Leon Mege. GIA certificate #2165647209 The pendan...
Category

2010s American Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Platinum

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

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

18 kt. Pink Gold Heart Shaped Necklace Set with 2.20 ct. Diamonds
Located in Antwerp, BE
Gorgeous 18 kt. Pink Gold Heart Shaped Necklace Set with 2.20 ct. Diamonds Diamonds: brilliant cut diamonds together 2.20 ct. Material: 18 kt. pink gold Measurements: 41 mm x 53.5...
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Rose Gold

Syna Yellow Gold Chrysoprase and Blue Sapphire Pendant with Diamonds
Located in Fort Lee, NJ
Created in 18 karat yellow gold Chrysoprase 1.50 carats approx. Blue Sapphire 0.05 carat approx. Diamonds 0.45 carat approx. Chain sold separately About the Designers ~ Dharmesh ...
Category

2010s Unknown Contemporary Diamond Necklaces

Materials

Diamond, Chrysophrase, Blue Sapphire, 18k Gold, Yellow Gold

Syna Yellow Gold Limited Edition Puppy Cameo Pendant with Diamonds
Located in Fort Lee, NJ
Created in 18 karat yellow gold Cameo 46.55 carats approx. Diamonds 1.13 carat approx. Chain sold separately Limited edition About the Designers ~ Dharmesh & Namrata Drawing insp...
Category

2010s Thai Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Bespoke Pearl & Diamond Pendant and Chain 0.24ct
Located in SYDNEY, NSW
A Pearl And Diamond Pendant And Chain. South Sea cultured pearl is set in 18ct Yellow Gold with 21 round brilliant cut diamonds. Suspended on an 18ct Yellow gold 46cm oval link neck...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Pearl, Yellow Gold

Syna Yellow Gold Blue Topaz Pendant with Diamonds
Located in Fort Lee, NJ
Created in 18 karat yellow gold Blue topaz 1.10 carats approx. Diamonds 0.22 carat approx. Chain sold separately About the Designers ~ Dharmesh & Namrata Drawing inspiration from...
Category

2010s Unknown Contemporary Diamond Necklaces

Materials

Diamond, Topaz, Blue Topaz, 18k Gold, Yellow Gold

18 kt. White Gold Necklace with 2.63 ct. Diamond Pendant
Located in Antwerp, BE
Gorgeous 18 kt. White Gold Necklace with 2.63 ct. Diamond Pendant Diamonds: Brilliant cut diamonds together 2.63 ct. together Material: 18 kt. white gold Measurements: Pendant: 3...
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Pie cut diamond drop & Emerald illusion all around diamond necklace of 12.50 cts
Located in Bangkok, TH
This is a grand Necklace with all around diamonds Emerald illusion features precisely arranged diamonds that resemble an emerald-cut stone This dazzling 18kt white gold 16 inch necklace showcases 12.50 cts of round, Baguette & Pie cut diamonds, expertly set to create the look of much larger stones. Handcrafted in Thailand by Trinity Designer Jewel...
Category

2010s Thai Artisan Diamond Necklaces

Materials

Diamond, 18k Gold

Modern 14k Yellow Gold .54 ct Diamond Vertical Bar Pendant Necklace 18"
Located in Eagan, MN
I just love this necklace! The design is just so cool. It has 9 brilliant cut diamonds measuring approximately 2.4 x 2.4 x 1.8 mm. To my untrained eye the color appears to be H-I....
Category

2010s Italian Art Deco Diamond Necklaces

Materials

Diamond, Gold, 14k Gold, Yellow Gold

Vintage Circa 1980s 14k Gold Handmade Natural Diamond Decorated Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 18.5 grams. Totally is brilliant cut diamond 1 carat. Totally is rose cut diamond totally 1.30 carat. The diamond is has G-H color and vs-s1-s...
Category

1980s European Retro Vintage Diamond Necklaces

Materials

Diamond

Pink Sapphire with Diamond Necklace set in 18K White Gold Setting
Located in Bangkok, TH
Pink Sapphire 50.66 carats with Diamond 3.42 carats Necklace set in 18K White Gold Settings Width: 0.7 cm Length: 41.0 cm Total Weight: 77.18 grams "We first opened doors in 1980 ...
Category

2010s Thai Contemporary Diamond Necklaces

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Circle of Diamond Pendant Necklace with 1.50 cts of Fine Fancy cut Diamonds
Located in Aspen, CO
This is a white gold chain supporting a circle that has 50 tapered and straight baguette finely matched diamonds channel set in a perfect and brilliant circle symbolizing eternity. ...
Category

21st Century and Contemporary Italian Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Vintage Van Cleef and Arpels Diamond 18k Yellow Gold Link Necklace
Located in Beverly Hills, CA
One Vintage Van Cleef and Arpels Diamond 18k Yellow Gold Link Necklace. Featuring eight round brilliant cut diamonds with a total weight of approximately 0.75 carat, graded colorless...
Category

1980s Vintage Diamond Necklaces

Materials

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

Natural 7.68 Carat Pear & Round Diamond Pendant Necklace 18 Karat White Gold
Located in IN
Item Code :- SEPD-3796 Gross Wt. :- 18.31 gm 18k White Gold Wt. :- 16.77 gm Natural Diamond Wt. :- 7.68 Ct. ( AVERAGE DIAMOND CLARITY SI1-SI2 & COLOR H-I ) Necklace Length :- 16 inch...
Category

21st Century and Contemporary Indian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

18 kt. White Gold Akoya Degradé Pearls and Diamonds 3 Strand Necklace
Located in Antwerp, BE
Magnificant Akoya Pearls 3 Strand Degradé Necklace With 18 kt. White Gold Lenti Lock with Diamonds Pearls: Amazing Perfect 176 Akoya pearls, diameter biggest pearl 9.6 mm Material...
Category

21st Century and Contemporary Italian Artisan Diamond Necklaces

Materials

Diamond, Pearl, White Gold

18 kt. White Gold Flower Pendant / Necklace With 1.18 ct. Diamonds
Located in Antwerp, BE
Beautiful 18 kt. White Gold Flower Pendant / Necklace With 1.18 ct. Diamonds Matching Ring : Ref: LU1752212579182 Diamonds: White brilliant cut diamonds, together approx. 1.18 ct....
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

18 kt. White Gold Necklace Pendant with 1.13 ct. Diamonds
Located in Antwerp, BE
Timeless yet Gorgeous 18 kt. White Gold Necklace Pendant with 1.13 ct. Diamonds Diamonds: 7 brilliant cut diamonds together 1.13 ct. F/G VS Material: 18 kt white gold Measurement...
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

43.24ct Extra Large Baroque Pearl Diamond Necklace Pendant in 18K White Gold
Located in Wan Chai District, HK
Introducing our meticulously crafted 43.24ct Extra Large Baroque Pearl Diamond Necklace Pendant in 18K White Gold. This remarkable piece of jewelry showcases the captivating allure a...
Category

21st Century and Contemporary Hong Kong Contemporary Diamond Necklaces

Materials

Diamond, Pearl, Cultured Pearl, Freshwater Pearl, 18k Gold, White Gold

Gorgeous 18 kt. White Gold Sturdy Necklace with 2.6 ct. Diamonds
Located in Antwerp, BE
Gorgeous 18 kt. White Gold Sturdy Necklace with 2.6 ct. Diamonds Diamonds: Brilliant cut diamonds together 2.6 ct. Material: 18 kt white gold Measurements: Sturdy necklace approx...
Category

21st Century and Contemporary Italian Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Natural Black and White Diamond Swirl Pendant in 18K White Gold
Located in New York, NY
This elegant swirl pendant has over 6.5 carats of diamonds all set in 10.5 grams of 18K rhodium gold. This pendant is over 2" in length and is perfect to wear for that special event....
Category

2010s Diamond Necklaces

Materials

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

Diamond Necklace set in 18K White Gold Settings
Located in Bangkok, TH
Diamond 8.50 carats Necklace set in 18K White Gold Settings Width: 2.2 cm Length: 44 cm Total Weight: 77.37 grams "We first opened doors in 1980 when it was then situated in the v...
Category

2010s Thai Art Nouveau Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Diamond Necklace set in 18K Gold Settings
Located in Bangkok, TH
Diamond 6.08 carats Necklace set in 18K Gold Settings Width: 6.0 cm Length: 42.5 cm Total Weight: 131.92 grams "We first opened doors in 1980 when it was then situated in the vici...
Category

2010s Thai Contemporary Diamond Necklaces

Materials

Diamond, 18k 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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