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Diamond Necklaces

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Period: 1980s
Gemstone: Diamond
Vintage 1980s Diamond and 18K White Gold Heart Pendant
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage 0.55 carat diamond and 18 karat white gold heart shaped pendant; part of our vintage jewelry and estate jewelry collections. This fine and impressive vintage diamond...
Category

1980s Unknown Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Heart-Shaped Citrine Pendant-Necklace with Diamonds
Located in New York, NY
The necklace is finely crafted in 14k white gold, a citrine stone and diamonds weighing a total of 0.50 dwt. Circa 1970.
Category

1980s Unknown Vintage Diamond Necklaces

Materials

Diamond, 14k Gold

Orientalist Turquoise Amulet Necklace
Located in METAIRIE, LA
rare this size with such vibrant, rich natural color *Electronically tested for metal purity. We offer an impeccable presentation, as well as detailed gift-wrap of your choice, wi...
Category

1980s Egyptian Revival Vintage Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Gold Necklace with Tassels and Diamonds Clasp
Located in Tel Aviv, IL
Gold Necklace with Tassels and Diamonds Clasp Fashionable yellow gold necklace with 15 gold tassels that adjust to wanted length. Made in ...
Category

1980s French Vintage Diamond Necklaces

Materials

Diamond, White Diamond, Gold, Yellow Gold

Bulgari Angel Skin Coral, Diamond, and Gold Coin Necklace
Located in New York, NY
An unusual triple-strand necklace of graduated design, composed of coral beads measuring approximately 16.0 to 6.8 mm, gathered at the sides with two gold coins, the reverse to the m...
Category

1980s Italian Vintage Diamond Necklaces

Materials

Coral, Diamond, Gold, 18k Gold

18 Karat Gold Sapphire Butterfly Pin Pendant
Located in METAIRIE, LA
This 18 Karat Gold Sapphire & Diamond Butterfly features a central 1.20 carat Marquise cut Natural Color Changing [Blue-Green] Sapphire, resembling the body of Butterfly, at 10mm in ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

14 Karat Lodolite Pyramid Amulet
Located in METAIRIE, LA
*Electronically tested for metal purity. We offer an impeccable presentation, as well as detailed gift-wrap of your choice, with this purchase. In addition, you will receive a ful...
Category

1980s Egyptian Revival Vintage Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold, Yellow Gold

White Gold Ornate Diamond Eli Collection
Located in Dallas, TX
18K White Gold Ornate Diamond Choker Style Necklace 1.40Carat.
Category

1980s American Modern Vintage Diamond Necklaces

Materials

Diamond, White Gold

Necklace Earrings Set Emeralds Diamonds Yellow Gold 18 K, 1984
Located in Herzelia, Tel Aviv
Emeralds Diamonds Necklace Earrings Set Yellow Gold. Magnificent Yellow Gold 18K and fine Emeralds set of necklace and earrings. Fine...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Emerald, Yellow Gold

Bulgari Ruby Diamond Gold Necklace and Earring Suite
Located in New York, NY
A 1980's Bulgari ruby and diamond necklace and earring suite in 18k gold; the necklace designed as a series of oval-shaped links,...
Category

1980s Italian Vintage Diamond Necklaces

Materials

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

Double Strand Diamond Pearl White Gold Rivière Necklace
Located in New York, NY
Double Strand Pearl Rivière Necklace in 18k White Gold. Two strands of pearls fixed in length by a late Art Nouveau motif fashioned in step-cut and white brilliant diamonds. Pearl ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold

Cartier Diamond, Semi-Precious Stones Necklace
Located in New York, NY
An exceptional vintage pasha necklace by Cartier, centering one large grid pendant embellished with brilliant diamonds and semi precious stones mounted in...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Amethyst, Aquamarine, Peridot, Tourmaline, 18k Gold

Elegant 18 Karat Yellow Gold Coral Tassel Torsade with Diamond Clasp Necklace
Located in Zurich, Zollstrasse
A rare torsade of 2.7 mm deep red coral and gold beads necklace witch a detachable tassel. This vibrant 31 strand natural coral torsade a...
Category

1980s Unknown Contemporary Vintage Diamond Necklaces

Materials

Coral, Diamond, 18k Gold, Yellow Gold

Incogem Yellow Gold Diamond Tennis Racket Pendant
Located in Palm Desert, CA
Incogem 14 Karat Yellow Gold Diamond Tennis Racket Pendant. Serving up some fun on this piece, if you love the game you'll love this darling pend...
Category

1980s American Retro Vintage Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold, Gold

Ruby and Diamond Gold Necklace
Located in New York, NY
Ruby & Diamond Gold Necklace, Pave set Diamonds with 9 Oval Cut Ruby stones set in four prongs. Approx Length: 16" 18K Yellow Gold 9.80 Cts of Rubies 12.40 Cts of Diamonds
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Ruby, Yellow Gold

Cartier Tapered, Baguette, Round Diamond Necklace, 38 Carat
Located in New York, NY
Circular, baguette and tapered baguette-cut diamonds, 18k gold, 16 inches, signed Cartier
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

"Day & Night" South Sea Pearl 14 Karat Gold Lariat Necklace
Located in METAIRIE, LA
This "Day & Night" Pearl Lariat features 2 Focal South Sea Pearls - 1 Classic White shade & 1 Black Peacock shade - each measuring 11mm-11.1mm in diameter .. [The combination of Blac...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, South Sea Pearl, 14k Gold, Yellow Gold, Gold

Incogem Floating Solitaire Diamond Pendant, 1.15 Carat
Located in Palm Desert, CA
Incogem Floating 1.15 Carat Solitaire Diamond Pendant: 14k Yellow Gold. The pendant is handcrafted of recycled 14k yellow gold. The 1.15 carat diamond...
Category

1980s American Modern Vintage Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold, Gold

Spinel, Pearl and Diamond Multi Strand Tassel Necklace
Located in New York, NY
Spinel, Pearl & Diamond Multi Strand Tassel Necklace Necklace Length: 16" Tassel Length: 2.5"
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Pearl, Spinel

18 Karat White Gold Star with Center Ruby and Diamonds Pendant
Located in New York, NY
The pendant is finely crafted in 18k white gold with center ruby weighing approximately total of 0.45 carat and diamonds weighing approximately total of 0.14 carat. Circa 1980.
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Ruby, White Gold

NYC 18 Karat Yellow Gold 11.84 Carat Diamond and 3.15 Carat, Ruby Necklace
Located in New York, NY
Retro classic 18 karat yellow gold necklace. The necklace is designed as a chain with four marquis shaped motifs. Each centers a marquis ruby surrounded b...
Category

1980s Italian Retro Vintage Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Red Sponge Coral and Pyrite Beads Strand with Diamond 18 Karat Clasp
Located in Miami, FL
A one of a kind free form organic sponge coral and pyrite beads necklace. The necklace features a sequence of sponge coral and pyrite beads ending with a clasp composed of a diamond ...
Category

1980s American Modern Vintage Diamond Necklaces

Materials

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

O.J. Perrin Set of a Necklace and Earrings in 18 Carat Gold and Diamonds
Located in Paris, FR
O.J. PERRIN Set of a Necklace and a Pair of Circles Motif Earrings in 18 Carat yellow Gold and Diamonds: The Necklace has five Circles paved with 13 Diamonds for a Weight of approxi...
Category

1980s French Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Vintage Emerald and 1.54 Carat Diamond White Gold Necklace
Located in Jesmond, Newcastle Upon Tyne
An impressive vintage 0.44 carat emerald and 1.54 carat diamond, 18 karat white and yellow gold necklace; part of our diverse gemstone jewelry collections. This fine and impressive vintage emerald and diamond necklace...
Category

1980s Unknown Vintage Diamond Necklaces

Materials

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

Red Coral Diamond Yellow Gold Clasp Beads Necklace
Located in New York, NY
This rare vintage necklace is composed of genuine coral beads forming a graduated strand and ranging in size from 7.50mm to 12.00mm. Completed with...
Category

1980s Italian Vintage Diamond Necklaces

Materials

Coral, Diamond, 14k Gold, Yellow Gold

Emerald and Diamond Flower Link Necklace
Located in New York, NY
Emerald & Diamond Flower Link Necklace, Made By Elan Gold Type: 18K Yellow Gold Emerald Weight: 39.00 Cts Diamond Weight: 4.50 Cts Measurements: ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Emerald

18 Karat Yellow Gold Multi-Strand Wire Necklace with Diamond Heart Pendant
Located in Zurich, Zollstrasse
A timeless and yet very wearable multi-strand gold wire necklace with a hear pendant. In 18 K yellow Gold. The heart is pave set with an incredibl...
Category

1980s Swiss Contemporary Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

18KT Gold Necklace with 14.75Ct. Cabochon Blue Sapphires and 2.25 Carat Diamonds
Located in New York, NY
This lovely necklace is designed with 5 oval Blue Sapphire Cabochons, each set in an 18 kt yellow gold setting accented with round Brilliant Diamonds. The Sapphires hang from a neckl...
Category

1980s Unknown Contemporary Vintage Diamond Necklaces

Materials

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

1980s Diamonds and 18 Karat Yellow Gold Necklace
Located in New York, NY
The necklace is finely crafted in 18k yellow gold wirh diamonds weighing approximately total of 2.00 carat. The necklace weighing approc=ximately total of 50.00 dwt. The length: 16.5...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Yellow Gold

Van Cleef & Arpels Diamond, Multi-Strand Pearl Necklace
Located in New York, NY
VAN CLEEF & ARPELS Diamond, Multi-Strand Pearl Necklace. An 18k yellow gold necklace, set with diamonds and multi-strand of pearls Diamond weight approx. 30 carats total and pearls ...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold

H. Stern Geometric 18 Karat Gold and Diamond Trio Set
Located in METAIRIE, LA
We are thrilled to offer this one of a kind 18 Karat Gold & Brilliant Diamond 3-Piece set hand crafted by Hans Stern. In an asymmetrical, multi-level geometric design encrusted with ...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Diamonds, Tsavorites, Pink Coral Spheres, White and Rose Gold Beaded Necklace
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1980s Italian Retro Vintage Diamond Necklaces

Materials

Coral, White Diamond, Tsavorite, 14k Gold, Rose Gold, White Gold

Handcraft Amethyst 14 Karat Yellow Gold Diamonds Drop Necklace
Located in Marcianise, IT
For any problems related to some materials contained in the items that do not allow shipping and require specific documents that require a particular period, please contact the selle...
Category

1980s Italian Artisan Vintage Diamond Necklaces

Materials

Amethyst, Diamond, Yellow Gold, 14k Gold, Silver

Gold Bracelet and Necklace Set with Onyx and Diamonds
Located in New York, NY
Set of a necklace and a bracelet finely crafted in 18 karat yellow gold; necklace 118.4 DWT and bracelet 64.5 DWT and black onyx. Both items with diamonds weighing of 1.80 karat. Ci...
Category

1980s Unknown Vintage Diamond Necklaces

Materials

Diamond, Onyx, 18k Gold

Pearl Diamond Emerald Necklace
Located in New York, NY
Necklace, finely crafted in 18k yellow gold with pearls, emeralds weighing approximately a total of 20.00 carat and diamonds weighing approximately a total of 10.50 carat. Circa 1980's.
Category

1980s Unknown Vintage Diamond Necklaces

Materials

Diamond, Emerald, Pearl, 18k Gold

Sapphire and Diamond Drop Necklace
Located in New York, NY
Sapphire & Diamond Drop Necklace 1 Oval Cut Sapphire approximately 4 carats 563 Diamonds approximately Necklace Length: 15.5" Pendant Length: 2.25"
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Sapphire

Marquise Gold Setting with Center Sapphire and Small Diamonds
Located in New York, NY
The ring is finely crafted in 18k yellow gold and platinum With sapphire weighing approximately total of 1.05 carat and diamonds weighing approximately total of 0.10 carat. Circa 1980.
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Sapphire, Gold

Diamond and Gold Necklace, Bucherer
Located in Zurich, Zollstrasse
18 K Yellow and white gold necklace, 81.34 g. Casual-elegant plait-chain, the front decorated with 1 brilliant-cut diamond of ca. 1.14 ct, F-G color, si clarity in a white gold be...
Category

1980s Swiss Contemporary Vintage Diamond Necklaces

Materials

White Diamond

Cabochon Emerald and Diamond Necklace
Located in New York, NY
Cabochon Emerald and Diamond Necklace 18 karat gold necklace with 1 emerald cabochon approx 3.26 carat, 98 round diamonds approx...
Category

1980s American Vintage Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

Vintage Pearl and Diamond 14 Carat Gold Necklace
Located in Chipping Campden, GB
Delicate and unbelievably pretty, this 14ct gold necklace holds 9 pearls and 8 diamonds. As you can see from the images this necklace can be made into a brac...
Category

1980s Unknown Modern Vintage Diamond Necklaces

Materials

Diamond, Pearl, 14k Gold

Cartier Diamond Necklace
Located in New York, NY
Timeless Cartier Diamond Necklace! 18k gold cable chain with brilliant shape center diamond with Cartier provenance documentation. Weight: ...
Category

1980s French Artist Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

1980s 18 Karat with Diamonds Choker Necklace
Located in New York, NY
The necklace is finely crafted in 18k yellow gold with front diamonds weighing approximately total of 15.00 carat. The necklace weighing approximately total of 127 gram.
Category

1980s Unknown Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Van Cleef & Arpels Diamond Tassel Gold Necklace or Bracelet
Located in New York, NY
Exceptionally crafted by Van Cleef & Arpels in the 1980s, comprising a long chain diamond necklace crafted in 18k yellow gold, suspending a large tassel completely embellished with brilliant diamonds, with approximately 65 carats in its entirety. This interchangeable piece measures approximately 22.25 inches in length and can be worn in several ways. as a long necklace, a wrapped choker...
Category

1980s French Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Vintage 1980s Oval Cut Sapphire and Diamond Yellow Gold Cluster Pendant
Located in Jesmond, Newcastle Upon Tyne
An impressive vintage 0.62 carat blue sapphire and 0.35 carat diamond, 18 karat yellow gold cluster pendant; part of our diverse gemstone jewelry collections. This fine and impressive oval cut blue sapphire and diamond pendant has been crafted in 18k yellow gold. The pierced decorated, cluster design is ornamented with a feature 0.62Ct oval cut blue sapphire. The sapphire is encircled by ten individually claw set modern brilliant round cut diamonds. The pendant suspends from an 18k yellow gold 20" spiga style chain via an integrated flared ring loop to the upper border of the cluster design. The chain secures with a lobster clasp, hallmarked with the 18k gold fineness mark. This vintage gemstone pendant...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Sturdy Collier in Yellow 18 Karat Gold and Little in Pink with White Diamonds
Located in Milano, Lombardia
Sturdy Collier with oval shape ideas to perfectly fit the neckline of the woman's neck, in particular, this piece has been made with a half-round barrel so that it perfectly fits the...
Category

1980s Italian Vintage Diamond Necklaces

Materials

White Diamond, 18k Gold

Yellow Gold Terrier Dog Hinged Pendant
Located in Palm Desert, CA
14 Karat Gold Terrier Dog Pendant. The adorable Terrier dog has a hinge on the back of the neck allowing the head to tilt to both the left or right. The d...
Category

1980s American Retro Vintage Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold, Gold

Handmade Vintage Italian Brilliant and 18 Karat Gold Leaf Motif Necklace
Located in Roma, IT
This exceptional handmade piece features highly specialized engraving techniques and Nature motifs. The necklace has 29 brilliant and measures approximately 42 cm. Hand made by ski...
Category

1980s Italian Retro Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Giovane Large Link Diamond Necklace
Located in New York, NY
Giovani large link diamond necklace in 18k white gold. the necklace is set pave set with rose cut diamonds weighing total of approx 125ct. Length 16". W...
Category

1980s Italian Artist Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Diamond and Ruby Bow Brooch Pin
Located in Miami, FL
Delightful brooch pin crafted in 18 karat white gold featuring round brilliant cut diamonds weighing approximately 5.33 carats total G color VS clarity, trimmed with 105 square cut rubies weighing approximately 4 carats total, fashioned into a bow. This beautiful diamond and ruby encrusted bow brooch pin...
Category

1980s Unknown Modern Vintage Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Vintage 53 Carat Aquamarine and Diamond Art Deco Revival Platinum Necklace
Located in Montreal, QC
Simply Beautiful! Finely detailed Aquamarine and Diamond Pendant Necklace, center securely set with an Aquamarine, weighing approx. 53.00 Carat total weight surrounded by Diamonds, ...
Category

1980s Art Deco Vintage Diamond Necklaces

Materials

Aquamarine, Diamond, Platinum

Vintage GIA Sapphire and Diamond Necklace in Platinum
Located in Addison, TX
This exquisite blue sapphire and diamond necklace is sure to make you feel like royalty. A royal blue natural GIA sapphire is set in the center held by four prongs flooded with diamo...
Category

1980s Unknown Art Deco Vintage Diamond Necklaces

Materials

Diamond, Blue Sapphire, Platinum

Gubelin Necklace and Bracelet Set
Located in New York, NY
Beautiful Gubelin necklace and bracelet set circa 1980s is finely crafted in 18K white gold. The necklace and bracelet diamonds weigh approximately a tota...
Category

1980s Swiss Vintage Diamond Necklaces

Materials

Diamond, 18k Gold

Retro Gold 0.50 Carat Natural Diamond & Pearl Necklace, Made in Italy circa 1980
Located in Los Angeles, CA
Stunning Italian 14k White Gold Necklace set with 0.50 carats (appx) of Natural colorless diamonds. The length of the necklace is 18" inches and the total weight of the piece is 22.6...
Category

1980s Italian Retro Vintage Diamond Necklaces

Materials

Diamond, 14k Gold

Vintage Floral Emerald and Diamond Necklace
Located in Zurich, Zollstrasse
Elegant 18 K white and yellow gold necklace of floral design. Set with 7 Emerald cabochons weighing approximately 3.50 ct and 252 brillinat cut diamonds of circa 5 ct, H color and vs...
Category

1980s Unknown Contemporary Vintage Diamond Necklaces

Materials

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

Cartier Diamond Link Necklace
Located in New York, NY
CARTIER Diamond Link Necklace in 18k Yellow and White Gold. A weighty yet wearable link chain by Cartier dating from the 1980s. This vint...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, White Diamond, Gold, 18k Gold

Yellow and Blue Sapphires Pearls Diamonds Rose Gold and Silver Necklace
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1980s Italian Retro Vintage Diamond Necklaces

Materials

Diamond, Pearl, Blue Sapphire, Yellow Sapphire, 9k Gold, Silver, Rose Gold

South Sea Pearl Necklace on White Gold Ball Clasp
Located in San Francisco, CA
A beautiful example of lovely luster and evenness of color, this 16.5" in length South Sea Pearl Necklace is sure to turn heads. 31 fine pearls, well matched in shape and color, have recently been restrung and are linked by a beautiful white gold ball clasp...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, South Sea Pearl, 18k Gold

Ruby and Diamond Cascade Necklace and Earring Set
Located in London, GB
Spectacular ruby and diamond necklace and earring set all in 18 carat white and yellow gold. They are both set with a total ...
Category

1980s Unknown Romantic Vintage Diamond Necklaces

Materials

Diamond, Ruby, 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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