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Diamond Necklaces

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25,393
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4,443
17,684
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62
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4,986
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123
23,217
12,124
9,730
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3,957
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Gemstone: Diamond
Antique Old Mine-cut Diamond Platinum Cross Pendant
Located in Los Angeles, CA
Antique diamond and platinum cross pendant circa 1900. SPECIFICATIONS: DIAMONDS: one hundred fifteen old mine and rose-cut diamonds totaling approximately 1.55 carats, approxima...
Category

Early 1900s Edwardian Antique Diamond Necklaces

Materials

Diamond, Platinum

Lauren Harper Rainbow Moonstone Egg White Diamond Double Links Long Necklace
Located in Dallas, TX
Long Drop Necklace handcrafted by award-winning jewelry designer Lauren Harper showcasing a spectacular large rainbow moonstone egg set with signature-finished 18k yellow gold vines ...
Category

2010s Artisan Diamond Necklaces

Materials

Diamond, White Diamond, Rainbow Moonstone, Moonstone, Multi-gemstone, Go...

High Lustrous South Sea Peacock Tone Pearl Diamond Strand Necklace
Located in Miami, FL
This very high quality lustrous South Sea peacock pearl and diamond strand necklace, weighs 80 grams and measures 19 inches long. Composed of 39 various colored creme to dark grey hi...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Pearl, 18k Gold

Chaumet Paris Diamond Sapphire 18 Karat Gold Bumble Bee Pendant
Located in New York, NY
Beautifully designed and masterfully handcrafted by the renown French jeweler Chaumet, these 18 karat gold pendants depicting a bumble bee make for a charming and most wearable penda...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, Sapphire, 18k Gold

18kt Rose Gold Les Bois Necklace with Purple Amethyst and Green Topaz
Located in Arezzo, IT
Delicate gold necklace characterized by a pendant with a stone wrapped in a pavè of pink topazes that give a touch of freshness to the jewel. The stone seems to blossom like a spring...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Amethyst, Diamond, Topaz, 18k Gold, Rose Gold

Emeralds Maravellous 18.76ct Certified Colombian Emerald Diamond Platinum Pend/B
Located in Brunswick, ME
An exquisite statement Brooch/Pendant necklace featuring an oval cut natural Colombian emerald weighing 16.16 carats set in a ribbon motif brooch. The ribbon is set with tapered bagu...
Category

21st Century and Contemporary Art Deco Diamond Necklaces

Materials

Diamond, White Diamond, Emerald, Platinum

18K Fairmined Gold and Silver, Canadamark Diamonds, Handmade, Flower Necklace
Located in Rimini, IT
Flower necklace completely handmade in Italy with Canadamark diamonds, Fairmined silver, and different hues of 18K Fairmined gold. The necklace, composed of thirty-three individual ...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, Palladium, 18k Gold, Gold, Silver

Edwardian Jade Natural Pearl Diamond Platinum Sautoir Necklace
Located in New York, NY
This unique and amazingly well handcrafted Edwardian soutoir, from ca.1910 is a true piece of most wearable art. The center piece, a disc of carved jade is bezel-set in a platinum fr...
Category

Early 20th Century Edwardian Diamond Necklaces

Materials

Diamond, Jade, Natural Pearl, 18k Gold, Platinum

Rare Gem 37.63 Carat AGL Certified Step-Cut Tourmaline Platinum Diamond Pendant
Located in New York, NY
An amazing intense forest green Tourmaline weighing 37.63 carats has been perfectly cut in the shape of an elongated step-cut measuring a stunning 31.75 millimeters in length and 12....
Category

Late 20th Century Diamond Necklaces

Materials

Diamond, Tourmaline, 14k Gold, Platinum

Belle Époque Antique Diamond Platinum Locket Necklace
Located in Chicago, IL
Circa 1910 This superbly crafted fifth anniversary necklace is made entirely in platinum. The front of the pendant is designed as stylized floral petals arranged in concentric circle...
Category

Early 20th Century Belle Époque Diamond Necklaces

Materials

Diamond, Platinum

Van Cleef & Arpels Carved Emerald and Diamond Necklace
Located in New York, NY
Van Cleef and Arpels Carved Emerald Diamond Necklace Approximately 13 carats of diamonds 1 magnificent hand carved emerald Signed Van Cleef & Arpels and numbered Measurements: 14.5"...
Category

1980s Vintage Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

18k Gold Diamond Lotus Necklace Meditation Necklace Floral Necklace
Located in Bangkok, TH
Diamond Lotus Necklace made of 18k solid gold available in three colors, White Gold / Rose Gold / Yellow Gold. Natural genuine round cut diamond each diamond is hand selected by me ...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Georgios Collection 18 Karat Gold Diamond Cross with Chain and Granulation Work
Located in Astoria, NY
S.Georgios Cross is all handmade from solid 18 Karat Yellow Gold and is microscopically decorated with granulation work all the way around. The background of the gorgeous Cross has a...
Category

21st Century and Contemporary Byzantine Diamond Necklaces

Materials

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

GRS Certified 88.37 Carat Paraiba Tourmaline Necklace
Located in Brooklyn, NY
The sensational color, 88.37 carat Paraiba tourmaline Necklace from Mozambique with GRS report certification. This Paraiba tourmaline is among the most sought-after and rare gemston...
Category

2010s Diamond Necklaces

Materials

Diamond, Tourmaline, Paraiba, 18k Gold, Platinum

Antique 19th Century Burma Ruby 7 Carat Diamond Pendant
Located in Chicago, IL
Circa 1870 A very fine example of high Victorian era jewelry, this silver topped 14K gold (front- silver, back – gold) pendant is designed as a flower head centered with a natural un...
Category

Late 19th Century Victorian Antique Diamond Necklaces

Materials

Diamond, Ruby, 14k Gold, Silver

14k Gold Diamond Turtle Charm Necklace Diamond Turquoise Pendant Necklace
Located in Bangkok, TH
Delicate Minimal Necklace is made of 14k solid gold available in three colors of gold, White Gold / Rose Gold / Yellow Gold. Lightweight and gorgeous natural genuine round cut diamo...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

DiamondTown 1.53 Carat Fine Burmese Ruby and Diamond Cross Pendant in 18k Gold
Located in New York, NY
(DiamondTown) This stunning cross pendant features five oval cut vivid red rubies (total weight 1.53 carats), around a central round diamond. Additional trios of diamonds decoate the...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Cabochon Ruby with Blue Sapphire and Diamond Cross Pendant Set in 18 Karat Gold
Located in Bangkok, TH
Cabochon Ruby 15.10 carats with Blue Sapphire 0.85 carat and Diamond 0.40 carat Cross Pendant set in 18 Karat Gold Settings (chain not included) Width: 3.9 cm Length: 4.3 cm "Sinc...
Category

2010s Diamond Necklaces

Materials

Diamond, Ruby, Blue Sapphire, Gold, 18k Gold

Geometrical Diamond White Gold Designer Pendant
Located in Montreux, CH
White Gold 14K Pendant Diamond 299-RND-2,95-G/VS1A Weight 18,33 grams With a heritage of ancient fine Swiss jewelry traditions, NATKINA is a Geneva based jewellery brand, which cr...
Category

2010s Diamond Necklaces

Materials

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

Georgios Collections 18 Karat Gold Diamond and Coin Reversable Pendant Necklace
Located in Astoria, NY
S.Georgios designer Coin Pendant is reversible and handmade from solid 18 Karat Yellow Gold. It is microscopically decorated on both sides with granulation - beads, and wires all fro...
Category

2010s Byzantine Diamond Necklaces

Materials

Diamond, White Diamond, Gold, 18k Gold, 22k Gold, 24k Gold, Yellow Gold,...

Stephen Webster Fly by Night Pink Opal Crystal Haze and White Diamond Pendant
Located in London, GB
Handcrafted in charming pink opal with clear quartz Crystal Haze, elegant 18k rose gold and timeless 0.24 carat white diamond pavé, this 'Fly By Night' Crystal Haze Small Pendant is ...
Category

2010s Contemporary Diamond Necklaces

Materials

Crystal, Opal, Quartz, Other, Diamond, White Diamond, Gold, 18k Gold, Ro...

Dana David 18 Karat Yellow Diamond Leather Necklace
Located in Cincinnati, OH
This is a classic Dana David necklace. 18 karat yellow gold clasp and pendant. Pendant is approximately 1" diameter round with 9 round diamonds. .09tdw Brown leather necklace with...
Category

Early 2000s Diamond Necklaces

Materials

Diamond, 18k Gold

18k Gold Heart and Cross Diamond Necklace Cross Pendant Religious Necklace
Located in Bangkok, TH
Heart and Cross Diamond Necklace is made of 18k solid gold. Available in three colors of gold: White Gold / Rose Gold / Yellow Gold. Lightweight and gorgeous natural genuine diamond...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

14k Gold Diamond Lotus Necklace Minimalist Spiritual Lotus Necklace
Located in Bangkok, TH
Diamond Lotus Flower Necklace is made of 14k solid gold available in three colors of gold, White Gold / Rose Gold / Yellow Gold. Lightweight and gorgeous natural genuine diamond. Ea...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

10.00 Carat Round Cut Diamond Riviera Necklace in 14K White Gold
Located in Chicago, IL
This is a graduated diamond Riviera necklace. Round brilliant cut diamonds totaling 10.00 carats are precision set in the 3 prong classic setting. The diamonds complete around this o...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, 14k Gold, White Gold

14k Gold Hamsa Hand Diamond Necklace Star of David Necklace
Located in Bangkok, TH
Beautiful Little Hamsa Hand Pendant is made of 14k solid gold. Available in three colors of gold, White Gold / Rose Gold / Yellow Gold. This necklace adorned with natural white roun...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

14k Gold Diamond Lotus Necklace Meditation Necklace Floral Necklace
Located in Bangkok, TH
Diamond Lotus Necklace is made of 14k solid gold available in three colors of gold, White Gold / Rose Gold / Yellow Gold. Natural genuine round cut diamond each diamond is hand sele...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

.75ctw White Gold Diamonds-by-the-Yard Necklace
Located in Chicago, IL
A gorgeous diamond necklace will rarely go overlooked. This 18” piece is both rare and stunning. It includes bezels that set white round diamonds. There are 10 white diamonds that to...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, 14k Gold, White Gold

18k White and Rose Gold Diamond Cat Charm Necklace Two Tone Diamond Necklace
Located in Bangkok, TH
Diamond Cat Charm Necklace in 18k White and Rose Gold. Delicate Minimal Necklace made of 18k solid gold. Natural genuine round cut diamond each diamond is hand selected by me to ens...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

18k Solid Gold Diamond Necklace Taurus Zodiac Sign Diamond Zodiac Pendant
Located in Bangkok, TH
Beautiful and Sparkly Diamond Taurus Necklace made of 18k solid gold available in three colors, Yellow Gold / Rose Gold / White Gold. Natural genuine round cut diamond each diamond ...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Chopard So Happy Diamonds Heart 18k Yellow Gold Pendant Necklace with Box
Located in Birmingham, GB
Chopard So Happy Diamonds 18k White Gold Heart Pendant Necklace. Inspired by drops of water, Chopard's Happy Diamonds Icons collection features diamonds that are free to swirl grace...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

18k Gold Hamsa Hand Necklace Evil Eye Necklace Diamond Necklace
Located in Bangkok, TH
Beautiful little Hamsa Hand Pendant is made of 18k solid gold available in three colors, White Gold / Rose Gold / Yellow Gold. Delicate Minimal Necklace is adorned with natural whit...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

0.35 CTW Diamond Star Pendant Necklace in 18 Karat Solid Gold
Located in Bangkok, TH
Lovely And delicate Star Charm Pendant Necklace In 18k Solid Gold featured with 0.35ct White Round Cut Diamond G color And Si Clarity. Fine Handmade and diamond are Handsets by maste...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Ruby with Diamond Pendant Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.68 carats with Diamond 0.05 carat Pendant set in 18 Karat Gold Settings (chain not included) Width: 0.6 cm Length: 1.6 cm Total Weight: 1.18 grams "We first opened doors in...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold

Yellow Diamond Necklace
Located in New York, NY
A beautiful and important yellow diamond necklace with yellow diamond drop. 31.86 carats of yellow diamonds and 68.35 carats of white diamonds set in 18k yellow gold and plati...
Category

21st Century and Contemporary Diamond Necklaces

Materials

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

18k Gold Diamond Angel Wing Necklace Angel Protect Charm Pendant Necklace
Located in Bangkok, TH
Diamond Angel Wing Necklace in 18k Rose Gold / White Gold / Yellow Gold. A solid gold diamond Angel wings necklace is made with perfection of art. A Spiritual Protect gift for yours...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

.91 ct. t.w. Diamond and Onyx 18k White Gold Flower Earrings
Located in Los Angeles, CA
These diamond and black onyx floral earrings make a bold statement. Round brilliant-cut diamonds are set with marquise shaped black onyx cabochons in 18k white gold. The earrings hav...
Category

21st Century and Contemporary Artisan Diamond Necklaces

Materials

Diamond, Multi-gemstone, Onyx, White Diamond, Gold, 18k Gold, White Gold

Peter Suchy .81 Carat Diamond White Gold Pendant Necklace
Located in Stamford, CT
Diamond pendant necklace. .81ct pear shaped diamond set in a 14k white gold basket pendant setting. 18 inch 14k white gold chain. Designed and crafted in the Peter Suchy workshop 1 ...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Gold, Gold, 14k Gold

14k Gold Pave Diamond Necklace Simple Minimal Necklace
Located in Bangkok, TH
Pave Diamond Necklace is made of 14k solid gold available in three colors of gold, Rose Gold / White Gold / Yellow Gold. Natural genuine round cut diamond each diamond is hand selec...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

Diamond Town 2.08 Carat Oval Cut Blue Sapphire and Diamond Pendant
Located in New York, NY
This lovely halo pendant features seven oval cut blue Sapphires, total 2.01 carats, encircling an open teardrop setting of round white diamonds. Center: 2.08 carats blue sapphire Di...
Category

2010s Contemporary Diamond Necklaces

Materials

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

18k Gold Tree of Life Pendant Necklace Diamond Spiritual Delicate Necklace
Located in Bangkok, TH
Tree of Life Pendant Necklace with Natural Diamond in 18k Rose Gold / White Gold / Yellow Gold. Diamonds set the shape of the simple and elegant design pendant. The diamonds are ver...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

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

18k Gold Diamond Solitaire Necklace Diamond Solitaire Bezel Setting
Located in Bangkok, TH
Diamond Solitaire Necklace is made of 18k solid gold available in three colors of gold, White Gold / Rose Gold / Yellow Gold. Brilliant white sparkly natural diamond bezel set hang...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Vintage Tiffany & Co. Fireworks Pearl and Diamond Pendant Necklace in Platinum
Located in London, GB
A beautiful vintage Tiffany & Co. ‘Fireworks’ pearl and diamond pendant necklace set in platinum. From the now discontinued ‘Fireworks collection, the pendant is predominantly compo...
Category

Early 2000s Modern Diamond Necklaces

Materials

Diamond, Pearl, Platinum

Art Deco Akoya Pearl Necklace/Brooch set in Diamonds & 18K White Gold
Located in Alexandria, VA
18 Karat White Gold Genuine Akoya Pearls & Diamonds 1.50 CTW Diamonds
Category

21st Century and Contemporary Art Deco Diamond Necklaces

Materials

Pearl, Diamond, 18k Gold, White Gold

Alexander 0.88ct Illusion Set Diamond Pendant Necklace 18k White Gold
Located in BEVERLY HILLS, CA
Stunning illusion set diamond pendant necklace, with the look of a 3ct emerald cut diamond. Created by Alexander Beverly Hills. 0.88ct of an emerald cut and trapezoid cut diamonds. A...
Category

2010s Modern Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.62 carats GVS Round/Baguette Diamonds Pendant 18K White Gold
Located in Istanbul, TR
6 baguettes diamonds surrounded by an oval ring set with brilliants Hanging pendant with a chain adorned with 4 diamonds measuring 43 cm for a total weight of 0.62 carats The Diamond...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Van Cleef & Arpels Diamond and Gold Necklace
Located in New York, NY
Van Cleef & Arpels, 18k gold and diamond necklace, The necklace composed of gold links with braided design, encrusted at the front within quality round brilliant-cut diamonds, estim...
Category

Late 20th Century Artist Diamond Necklaces

Materials

Diamond, 18k Gold

Blue Sapphire and Diamond Drop Necklace
Located in New York, NY
A GRAND piece. 77.40 carats of fine Ceylon Blue Sapphires 36.01 carats of white round brilliant cut diamonds. 18k white gold 2.5 inch long center drop, 16.5 inch length that c...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Blue Sapphire

Emerald and Diamond Necklace
Located in New York, NY
A grand emerald and diamond necklace. 39.09 carats of fine green emerald, 48.47 carats of white round and pear shaped diamonds. Set in platinum The necklace measures 16.5 inches...
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Emerald, Platinum

18k Gold Hamsa Hand Diamond Necklace Star of David Necklace
Located in Bangkok, TH
Beautiful Little Hamsa Hand Pendant is made of 18k solid gold. Available in three colors of gold: White Gold / Rose Gold / Yellow Gold. This necklace adorned with natural white roun...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Natural Ethiopian 4.55ct Fire Opal Diamond Necklace Estate Platinum Pear Cut
Located in Torrance, CA
Finely detailed natural Ethiopian fire opal & diamond pendant & necklace crafted in 850 & 900 platinum. Natural opal measures 16mm x 9mm (estimated at 4.55 carats), accented with a...
Category

Mid-20th Century Modern Diamond Necklaces

Materials

Diamond, White Diamond, Opal, Fire Opal, Platinum

Stellina Nova Necklace with Diamonds
Located in New York, NY
Sunny and bright! Our iconic matte gold Stellina necklace is fresher than ever in its Stellina Nova incarnation. This version features seven small diamonds for some elegant razzle da...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold

Blue Sapphire with Diamond Pendant Set in 18 Karat Gold Settings
Located in Bangkok, TH
Blue Sapphire 1.90 carats with Diamond 0.11 carat Pendant set in 18 Karat Gold Settings (chain not included) Width: 0.8 cm Length: 2.2 cm Total Weight: 2.65 grams "We first opene...
Category

2010s Contemporary Diamond Necklaces

Materials

Diamond, Blue Sapphire, Gold, 18k Gold

Diamond Riviera/Tennis Necklace
Located in Miami, FL
Tennis Necklace made with real/natural brilliant cut diamonds. Total Diamond Weight: 3.30 carats. Diamond Quantity: 106 brilliant cut diamonds. Diamond Color: G. Clarity: SI. Mounted...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

0.98 Carat Pear Shaped Emerald & Diamond Pendant in 18k Two Tone Gold
Located in Chicago, IL
Perfect for those who appreciate vintage-style elegance. This enchanting brightly polished 18k white gold pendant features a 0.98 carat oval cut fine quality emerald exhibiting a lus...
Category

2010s Contemporary Diamond Necklaces

Materials

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

1 Carat Round Black Diamond Solitaire Pendant Necklace in 14K White Gold
Located in Chicago, IL
Surprise a special woman in your life with this breathtaking, statement hand crafted solitaire black diamond necklace. This eye-catching pendant necklace features a 1 carat round cut...
Category

2010s Contemporary Diamond Necklaces

Materials

Black Diamond, 14k Gold, White Gold

9.51 Carat Sapphire Pendant
Located in Richmond, BC
Striking heart shape sapphire pendant. Round brilliant cut, sparkling natural blue sapphires mounted in heart shape design, accented with round brilliant cut diamond in small heart ...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, Sapphire, 14k Gold

18k Gold Diamond Clover Necklace Simple Minimal Necklace
Located in Bangkok, TH
Diamond Clover Necklace is made of 18k solid gold available in three colors, White Gold / Rose Gold / Yellow Gold. Tiny Clover Necklace showcasing 25 Brilliant round diamond pave se...
Category

21st Century and Contemporary Modern Diamond Necklaces

Materials

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

Antique and Vintage Diamond Jewelry and Watches

Diamonds and antique 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. 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 the stone 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 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. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamonds 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). When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty.

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.

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