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Diamond Necklaces

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Gemstone: Diamond
14K Emerald & Diamond Pendant Necklace: Exquisite Luxury Statement Jewelry Piece
Located in Holtsville, NY
Immerse yourself in the captivating allure of our Forest Ferns collection with this exquisite Emerald and Diamond Pendant from Jeweltique. This pendant is more than just jewelry; it'...
Category

2010s Indian Diamond Necklaces

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Tanzanite Necklace With Diamonds 2.07 Carats 14K White Gold
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP All Gemstones are Natural Marquise Tanzanite = 1.88 Carat 24 Round Diamonds = 0.19 Carats Metal: 14K White Gold Pendant Dimensio...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

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

John Hardy pendant necklace 18K Yellow gold with diamonds 1.00ct
Located in New York, NY
Brand John Hardy Condition Pre owned 18K Yellow gold Chain length 18'' Pendant diameter 34X16.4mm Weight 13.6gr Diamonds 1.00ct Clarity VS Color Grade E Stone shape round Retail pri...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

1.12 Carats Total Brilliant Round Diamonds Open-Work Heart Pendant Necklace
Located in New York, NY
A simple and unique pendant necklace showcasing a row of round brilliant diamonds weighing 1.12 carats total, F color and VS/SI1 in clarity. Set in an open-work heart shape mounting ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Natural Emerald Diamond Pendant Necklace 18" 14k W Gold 1.90 TCW Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Emerald and Diamond Pendant Necklace 18" 14k W Gold 1.90 TCW Certified $4,950 301448 Made in Italy This is a Unique Custom Made Glamorous Piece of Je...
Category

2010s American Diamond Necklaces

Materials

Diamond, Emerald, Gold

Diamond Cross Necklace In 18k White Gold
Located in Fort Lauderdale, FL
Diamond Cross Necklace In 18k White Gold, - 1 carat total black & white diamonds weight, - length of the necklace is 18”, - cross dimensions 7/8” x 5/8”
Category

2010s Unknown Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Sterling Silver and Diamonds Oval Filigree Pendant
Located in Stamford, CT
Sterling Silver and Diamonds Oval Pendant. Elaborate filigree design laces weave into a romantic and feminine scroll work, studded with premium round white diamonds. Total diamond we...
Category

2010s Diamond Necklaces

Materials

Diamond, Sterling Silver

LB Exclusive 14K Yellow Gold 0.05ct Diamond Pendant Necklace PD4-16247YGA
Located in Southampton, PA
Add a touch of sophistication to any ensemble with this simple, elegant necklace. Suspended from an 18 chain, youll find a 14K Yellow Gold pendant measuring 1.25 long and 0.25 wide. ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Garnet, Yellow Gold

White Gold Diamonds Flower Pendant
Located in Stamford, CT
Elegant flower pendant in 14k white gold. Perfect for casual wear and a night out. Pendant contains fifty eight round white diamonds, H-I color, SI clarity, 0.18 ctw. Adjustable len...
Category

2010s Diamond Necklaces

Materials

Diamond, White Gold

Ladies 14K White and Yellow Gold Tourmaline Princess Cut Diamond Pendant
Located in Houston, TX
Gender: Unisex Metal Type: 14K White & Yellow Gold Length: 1.25 Inches Width: 22.00 mm Weight: 9.80 grams 14K white & yellow gold diamond and tourmaline drop pendant. Engraved w...
Category

21st Century and Contemporary Unknown Diamond Necklaces

Materials

Diamond, Tourmaline, 14k Gold, White Gold, Yellow Gold

Natural Diamond Cross Pendant with Chain 17" 14k W Gold 0.17 CT Certified
Located in Brooklyn, NY
Natural Quality Diamond Cross Pendant with Chain 17" 14k W Gold 0.17 CT Certified $2,490 307920 This magnificent pendant is very versatile and can be used both vertical and horizont...
Category

2010s American Diamond Necklaces

Materials

Diamond, Gold, 14k Gold, White Gold

Ladies 14K Yellow Gold by the Yard Diamond Chain Necklace
Located in Houston, TX
Gender: Ladies Metal Type: 14K Yellow Gold Length: 18.00 inches Width: 1.25 mm Weight: 2.30 grams Ladies 14K yellow gold single strand diamond necklace...
Category

21st Century and Contemporary Unknown Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Diamond Cross Necklace In 18k White Gold
Located in Fort Lauderdale, FL
Diamond Cross Necklace In 18k White Gold, - 1 carat total black & white diamonds weight, - length of the necklace is 18”, - cross dimensions 7/8” x 5/8”
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, White Gold

Yellow Gold Diamonds Flower Pendan
Located in Stamford, CT
Elegant flower pendant in 14k yellow gold. Perfect for casual wear and a night out. Pendant contains fifty eight round white diamonds, H-I color, SI clarity, 0.18 ctw. Adjustable len...
Category

2010s Diamond Necklaces

Materials

Diamond, Yellow Gold

IGI Certified Zambian Emerald Necklace With Diamonds 3.60 Carats 14K Yellow Gold
Located in Laguna Niguel, CA
It comes with the IGI Certificate All Gemstones are Natural Pear Zambian Emerald = 3.34 Carat 33 Round Diamonds = 0.26 Carats Metal: 14K Yellow Gold Pendant Dimensions: 26 x 14 mm
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Emerald, Gold, 14k Gold, Yellow Gold

Natural Emerald Diamond Pendant 18" 14k WG 2.05 TCW Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Emerald and Diamond Necklace 18" 14k WG 2.05 TCW Certified $4,950 309025 Made in Italy This is a Unique Custom Made Glamorous Piece of Jewelry! Not...
Category

2010s American Diamond Necklaces

Materials

Diamond, Emerald, 14k Gold

Elegant 14K Sapphire & Diamond Pendant Necklace 1.98ctw Gemstone Sparkle
Located in Holtsville, NY
Dive into the enchanting world of the ocean with our "Beneath the Waves" Sapphire and Diamond Pendant, a mesmerizing addition to our exquisite collection. Crafted with passion and pr...
Category

2010s Indian Diamond Necklaces

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Beautiful Sapphire, Turquoise & Diamond Devil Eye Necklace In 14k
Located in Fort Lauderdale, FL
Beautiful Sapphire, Turquoise & Diamond Devil Eye Necklace In 14k. - 0.11 carats in diamonds, - 1.1 carats in blue sapphires & turquoise, - length is adjustable 18” or 16”, - wid...
Category

2010s American Modern Diamond Necklaces

Materials

Diamond, Sapphire, Turquoise, 14k Gold

0.6 Carat Diamonds in 18K White Gold Cross Pendant
Located in New York, NY
Diamond Carat Weight: This graceful cross pendant features a total of 0.6 carats of diamonds. The diamonds, carefully selected for their brilliance, consist of 54 round-cut stones. E...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, White Gold

Diana M. 14 kt white gold, 18" 4 prong diamond tennis necklace featuring 10.50
Located in New York, NY
14 kt white gold, 18" 4 prong diamond tennis necklace featuring 10.50 cts tw of diamonds Diana M. is a leading supplier of top-quality fine jewelry for over 35 years. Diana M is one-...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, White Gold

Stunning 14K Emerald & Diamond Pendant Necklace Elegant Gemstone Sparkle
Located in Holtsville, NY
Product Description: Immerse yourself in the enchanting allure of our Forest Ferns Emerald and Diamond Earrings, a mesmerizing creation from Jeweltique's prestigious collection. Insp...
Category

2010s Indian Diamond Necklaces

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Luxury 14K Diamond Pendant Necklace - Exquisite Statement Piece in White Gold
Located in Holtsville, NY
Experience the enchanting beauty of winter with our Snowflake Soirée Diamond Necklace, a masterpiece from our exquisite collection. Each piece in this collection features sparkling w...
Category

2010s Indian Diamond Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

GIA Certified 48 Carat Riviera Diamond Platinum Necklace
Located in Rome, IT
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Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Platinum

Cartier 6 Diamond LOVE Necklace
Located in London, GB
Here we have a chic and stylish necklace from the world renowned jewellery house of Cartier. A trio of pendants on show boast Cartier's most celebrated design taken from the LOVE col...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Rose Gold, White Gold

Vintage Original 18k Gold Natural Diamond Decorated Enamel Pendant
Located in Fatih/İstanbul, 34
In very good condition. Total weight 3.1 grams. Diamond is has H color and vs clarity. Please contact for any question.
Category

1980s European Retro Vintage Diamond Necklaces

Materials

Diamond, 18k Gold, Enamel

18ct white gold diamonds by the mile necklace and puff pave heart pendant
Located in Cape Town, ZA
Extraordinary. Chain Attributes: Metal Colour: White Gold Metal: 18CT Length: 275mm Width: 2mm Weight: 9.1g Stone Attributes On Chain Stones: ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Gold

Diana M. 18kt White Gold Graduated Riviera Tennis Necklace 24.45 cts 3-prong
Located in New York, NY
18kt white gold graduated tennis necklace featuring 24.45 cts of round brilliant diamons set in a 3 prong setting. Diana M. is a leading supplier of top-quality fine jewelry for over...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

TIFFANY & Co. Platinum .42ct Diamond Cross Pendant Necklace
Located in Los Angeles, CA
TIFFANY & Co. Platinum .42ct Diamond Cross Pendant Necklace Metal: Platinum Chain: 16" long Pendant: 0.71"(18.1mm) long x 0.52"(13.2mm)" wide Diamond: 11 round brilliant diamonds, c...
Category

2010s American Diamond Necklaces

Materials

Diamond, Platinum

Diana M. 18 kt yellow gold, 17" 3 prong diamond tennis necklace
Located in New York, NY
18 kt yellow gold, 17" 3 prong diamond tennis necklace adorned with 26.00 cts tw of round diamonds (83 stones) Diana M. is a leading supplier of top-quality fine jewelry for over 35...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

La Triomphe 18Karat Yellow Gold Diamond and Onyx Pendant on La Triomphe Necklace
Located in Philadelphia, PA
A stunning La Triomphe gold necklace with an open square pendant embellished with mesmerizing black onyx and dazzling diamonds. The pendant is made of 18k yellow gold, black onyx, and 62 round diamonds. They weigh approximately 2.50 carats and have G-H color and VS clarity. It sits on a 18k yellow gold knotted link necklace...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Diana M. Custom 23.38 cts 4 Prong 18k White Gold Graduated Tennis Necklace
Located in New York, NY
Custom 18k white gold graduated tennis necklace 23.38 cts round diamonds Color FG SI clarity. Excellent cut center diamond 1 ct.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Amethyst and Yellow Diamond Rose Floral Yellow Gold Pendant Necklace
Located in London, GB
This unique amethyst and natural yellow diamond Rose pendant features colourful amethysts surrounding a vibrant natural yellow round brilliant cut...
Category

21st Century and Contemporary British Tudor Diamond Necklaces

Materials

Amethyst, Yellow Diamond, 18k Gold, Yellow Gold

Capucelli 7 Stone Dangle Diamond Station Necklace (0.50 ct.)
Located in Great Neck, NY
Introducing our stunning 7 Stone Dangle Diamond Necklace, a beautiful addition to any jewelry collection. This necklace features a bezel set diamond station design, with 7 dazzling d...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold

14K Rubellite & Diamond Drop Pendant Necklace - Exquisite Gemstone Statement
Located in Holtsville, NY
Evoke the fiery passion of nature's blooms with our exquisite Blooms of Passion Ruby Lite and Diamond Necklace. This radiant masterpiece from Jeweltique's Ruby Lite collection is a t...
Category

2010s Indian Diamond Necklaces

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Round Brilliant Diamond Bib Necklace 25.00 cttw in 18k White Gold
Located in La Jolla, CA
Round Brilliant Diamond Bib Necklace 25.00 cttw in 18k White Gold This is a spectacular statement necklace in 18k white gold featuring a total of 25.00 carats of lively, white bril...
Category

21st Century and Contemporary North American Diamond Necklaces

Materials

Diamond, White Gold, 18k Gold

Tanzanite Necklace With Diamond Halo 2.84 Carats 14K White Gold
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP All Gemstones are Natural Trillion Tanzanite = 2.54 Carat 33 Round Diamonds = 0.30 Carats Metal: 14K White Gold Pendant Dimensio...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

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

Diana M. 26.00 cts 18k White Gold Graduated Riviera Necklace
Located in New York, NY
Custom 18k white gold graduated tennis necklace featuring 26.00 cts of round brilliant diamonds set in a 4 prong setting 89 stones 0.29 each FG color SI clarity. Excellent cut.
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Red Garnet Pendant 3 Carat Set with Diamond 18k Yellow Gold
Located in Laguna Niguel, CA
It comes with the appraisal by GIA GG/AJP Red Garnet = 3 Carat Cut: Emerald Color: Vivid Deep Red Clarity: Eye Clean Dimensions: 9.2 x 7.5 x 4.2 mm Diamonds = 0.08 Carats Cut: Round ...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

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

Hirsh Wildflower Campion Diamond Pendant
Located in London, GB
Found in British woodlands, a Campion flower is known throughout history as a symbol of gentleness. Taking inspiration from this beautiful flower, the Hirsh Campion pendant is handma...
Category

2010s British Artisan Diamond Necklaces

Materials

Diamond, 18k Gold, Rose Gold

Important 27.15 Carat Pear Emerald Necklace Set with Diamonds 24.87 Carats Total
Located in Laguna Niguel, CA
The pendant was made from 18K White Gold and set with Diamonds. The centerpiece is a Very Important Pear Emerald. It comes with an appraisal by GIA G.G. Pear Emerald = 27.15 Carat To...
Category

1980s Art Deco Vintage Diamond Necklaces

Materials

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

18 Karat Yellow Gold Onyx & Fancy Diamond Tiger Necklace
Located in Hong Kong, HK
18 Karat Yellow Gold Onyx & Fancy Diamonds Tiger Necklace 9 RDDI 0.06 CT 324 RDFD 2.68 CT 39 MXOX 2.35 CT 2 RDRU 0.06 CT 18KY 23.29 GM Unleash your wild side with our 18K gold tig...
Category

21st Century and Contemporary Hong Kong Modern Diamond Necklaces

Materials

Diamond, Onyx, Yellow Gold

Deco Gold Necklace with Diamonds and Navy Enamel
Located in Nea Aghialos Magnesias, GR
100% Recycled 14 K White Gold Diamonds Enamel Size: 1.3 cm/0.51 inches In the arts, maximalism, a reaction against minimalism, is an aesthetic of excess. The philosophy can be s...
Category

2010s European Artist Diamond Necklaces

Materials

Diamond, Gold, Enamel

Elizabeth Locke Diamond Emerald 18 Karat Yellow Gold Hammered Link Necklace
Located in Philadelphia, PA
Designed as a cable link chain comprised of large oval-shaped hammered links With a stylized toggle clasp accented by round brilliant cut diamonds Weighing approximately 0.36 carat ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

Forever Diamond Necklace
Located in Nea Aghialos Magnesias, GR
100% Recycled 14 K White Gold Diamonds Size: 3.4 cm// 1.33 inches In the arts, maximalism, a reaction against minimalism, is an aesthetic of excess. The philosophy can be summari...
Category

2010s European Artist Diamond Necklaces

Materials

Diamond, Gold

Al Jassasiya Yellow Gold Choker With Diamonds
Located in Doha, QA
This unique piece is designed by Nada AL Sulaiti, Qatari award-winning jewellery designer. It's part of Al Jassasiya Collection which is one of our signature collections, that echoes...
Category

21st Century and Contemporary Qatari Modern Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Art Deco 20.62 CTW Aquamarine Diamond Platinum 18 Karat Gold Vintage Pendant
Located in Philadelphia, PA
Featuring a mixed rectangular cut aquamarine weighing approximately 20.50 carats Transparent light blue in color and set with grooved tabs in scroll motif mounting Set below a pierc...
Category

1930s Art Deco Vintage Diamond Necklaces

Materials

Aquamarine, Diamond, White Diamond, Gold, Platinum

Estate Onyx and 0.27TCW Diamond White Gold Pendant & Cord Necklace
Located in New York, NY
Weight: 14.5 Grams Stone: Onyx & Approx 0.27 TCW (0.015-0.06 ct) Diamonds Pendant: 31.5 x 26.5 mm Chain Length: 16 Inches Hallmark: Pendant-14K HL, Cord-750 ITEM #:BR-1062-092823-12
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Onyx, White Gold

Spotlight Gold Necklace with Diamonds and Pink Enamel
Located in Nea Aghialos Magnesias, GR
100% Recycled 14 K White Gold Diamonds Enamel Size: 40 cm and 3 cm Extension/ 15,7 inches and 1.1 inch Extension In the arts, maximalism, a reaction against minimalism, is an aest...
Category

2010s European Artist Diamond Necklaces

Materials

Diamond, Enamel

Estate 9.16 Ct Amethyst & 0.61 TCW Diamond Rose Gold Pendant Necklace Box
Located in New York, NY
Weight: 8.0 Grams Stone: 9.16 Ct (16 x 16 x 7.5 mm) Amethyst & Approx 0.61 TCW ( 0.005 ct) Diamonds Pendant: 23.0 x 21.0 mm Chain: 18 Inches Hallmark: 14K 585 ITEM #:BR-1062-092823-08
Category

21st Century and Contemporary Diamond Necklaces

Materials

Amethyst, Diamond, 14k Gold, Rose Gold

"Costis" Square In Motion Necklace with 11.13 carats Pink Tourmalines, Diamonds
Located in Athens, GR
"Costis" Square In Motion Necklace with 11.13 carats Pink Tourmalines and Diamonds. In these necklace of 18K Yellow Gold, especially square-cut Pink Tourmalines of 11.13 carats are ...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Tourmaline, 18k Gold

Antique Edwardian Diamond Cross Pendant Platinum 1.2ct Diamond
Located in Kendal, GB
A beautiful antique Edwardian cross pendant from the early 20th Century lined with twenty-four sparkling brilliant cut diamonds across the cros...
Category

1910s European Edwardian Vintage Diamond Necklaces

Materials

Diamond, Platinum

Antique Circa 1870s 8k Gold Natural Rose Cut Diamond Decorated Drop Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 18.1 grams. Totally diamond is about 2.50 carat The diamond is has vs-s1-s2-s3-Pique 1 clarity and H-I-J-K color. Total lenght is chain 45 cm...
Category

1870s European Victorian Antique Diamond Necklaces

Materials

Diamond, Gold

Natural Akoya Pearl Diamond Necklace 18" 14k White Gold 9 mm Certified
Located in Brooklyn, NY
Fine Quality Japanese Saltwater Akoya Pearl Diamond Necklace 18" 14k White Gold 9 mm Certified $4,950 308089 This is a One of a Kind Unique Custom Made Glamorous Piece of Jewelry! ...
Category

1990s American Diamond Necklaces

Materials

Diamond, Pearl, White Gold

Emilio Jewelry Gia Certified 44.00 Carat Asscher Cut Diamond Necklace
Located in New York, NY
From Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, Featuring a custom hand made necklace that sits perfectly! Every single ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond

Roman Malakov 0.33 Carats Round Green Emerald with Diamond Halo Pendant Necklace
Located in New York, NY
A classy pendant necklace showcasing a brilliant round cut color-rich green emerald weighing 0.33 carats, set in a classic four prong basket setting. Surrounded by a single row of ro...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, Emerald, 14k Gold, White Gold

LeVian 14 Karat Rose Gold Chocolate Pearl and Chocolate Diamond Necklace
Located in Scottsdale, AZ
Designer: LeVian Material: 14K rose gold Diamond: round brilliant cut = 0.20cttw Color: Chocolate Clarity: SI1 Length: necklace measures 18-inches in length Weight: 4.15 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Pearl, 14k Gold, Rose Gold

Estate Mauboussin Citrine and White Diamond Pendant in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful estate Mauboussin pendant with 1.75 ct. citrine oval and 0.20 ct. good quality white diamond rounds. Handmade in 18k yellow gold.
Category

21st Century and Contemporary Diamond Necklaces

Materials

Citrine, White Diamond, Yellow Gold

Retro Ruby and Diamond Yellow Gold Butterfly Pendant / Necklace
Located in Beverly Hills, CA
One Retro ruby and diamond butterfly motif 18K yellow gold pendant featuring 32 round cabochon and square cut rubies totaling 9 ct. Accented by 24 single round cut and old European cut diamonds totaling 0.75 ct. with a G-H color and SI-1 clarity. Attached to a 14K yellow gold open link chain necklace...
Category

1940s Retro Vintage Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, 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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