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12 Carat Diamond Necklace

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11 Carat Oval Tanzanite and 12 Carat Diamonds Necklace 18 Karat Gold Estate
Located in New York, NY
This extraordinary Necklace is consist of 7 Fine oval Tanzanite weighing approximately 11 Carats
Category

20th Century Drop Necklaces

Materials

Diamond, Tanzanite, 18k Gold

12 Carat Riviera Diamond Necklace
By Belfiore Jewelry
Located in Great Neck, NY
Graduated 3 prong diamond necklace set in 14K white gold. The center stone weighs 0.75 carats. The
Category

21st Century and Contemporary American Modern More Necklaces

Materials

Diamond, 14k Gold

12 Carat Diamond Platinum Necklace
Located in Bay Harbor Islands, FL
12 carats. It is further set with a natural color yellow diamond weighing approximately 0.50 carats
Category

Vintage 1940s Unknown More Necklaces

Materials

Diamond, Yellow Diamond, Platinum

12 Carat Diamond Platinum Necklace
12 Carat Diamond Platinum Necklace
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L 15.63 in
12 Carat Riviera Diamond Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
White Gold Karat 14K Four-prong setting riviera tennis necklace Graduated tennis necklace with
Category

2010s Italian Modern Chain Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

.12 Carat Diamond Pearl White Gold Necklace
Located in Stamford, CT
1970's 8.5mm, 18-Inch cultured pearl necklace with double sided 18k white gold diamond catch
Category

Late 20th Century More Necklaces

Materials

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

12 Carat Diamond White Gold 750 Necklace
Located in Lucerne, CH
313 brilliant cut diamonds totaling approx. 12 ct of G/H-vs quality. A brilliant piece! Please, ask
Category

21st Century and Contemporary Italian Contemporary More Necklaces

Materials

White Diamond, Diamond, 18k Gold, White Gold

12 Carat Opera Length Diamond Line Necklace
Located in Aspen, CO
Dramatic opera length double wire necklace adorned with approximately 12.12 carats of princess cut
Category

2010s American Contemporary More Necklaces

Materials

Diamond, 14k Gold

GIA 17 Ct Sugar Loaf Cabochon Colombian Emerald & 13 Ct Diamond Necklace 18KWG
Located in New York, NY
Colombian Emerald & 12 Carat Diamond Necklace 18KWG approximately 13 Carats of Diamond Necklace, Estate
Category

Early 2000s More Necklaces

Materials

Diamond, Emerald, 18k Gold

.12 Carat Diamond White Gold Open Heart Pendant Necklace
Located in Stamford, CT
Open heart diamond pendant necklace. 18k white gold open heart pendant with three floating diamonds
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

18 Karat White Gold South Sea & Tahitian Pearl Diamond Lariat 0.61 Carats 12-13M
By Harbor Diamonds
Located in New York, NY
with a diamond cap weighing 0.11 carats and 29 Baguette diamonds weighing 0.50 carats. Can customize in
Category

2010s Contemporary Drop Necklaces

Materials

Diamond, Pearl, White Gold

Tahitian Pearl Diamond Starfish Pendant Necklace 0.13 Carat 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
18K White gold pendant necklace featuring one diamond starfish motif weighing 0.13 carats and a
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, Pearl, White Gold

Opera Tennis Necklace 12 Carats 36 Inch
By Belfiore Jewelry
Located in Great Neck, NY
Opera necklace 36 inch set in 14K white gold. Each stone weighs 0.06 carats. The total weight is
Category

2010s Italian Modern More Necklaces

Materials

Diamond, 14k Gold

168.00 Carats Pink & Peach Opal and Diamond Gold Necklace
By Diamond Stars Jewelry, Inc.
Located in New York, NY
Diamonds G SI. There are 168.00 Carats in Peach & Pink Natural There are 12 Oval Cabochon Pink & Peach
Category

21st Century and Contemporary Chinese Modern Link Necklaces

Materials

Diamond, White Diamond, Opal, Gold, 18k Gold, Rose Gold

Tiffany & Co Paloma Picasso .12 Carat Diamond Platinum Heart Pendant Necklace
By Paloma Picasso for Tiffany & Co.
Located in Stamford, CT
Iconic Tiffany & Co Paloma Picasso diamond heart pendant necklace. 17 round brilliant cut diamonds
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

12 Carat Round Brilliant Diamonds By The Yard Necklace Certified
Located in New York, NY
Our Earth Mined Diamonds By The Yard Necklace for Ladies is the perfect way to add a touch of
Category

2010s American Link Necklaces

Materials

Diamond

18 Karat Yellow Gold South Sea Pearl Diamond Tassel Necklace 0.27 Carats
By Harbor Diamonds
Located in New York, NY
18 Karat Yellow Gold tassel necklace featuring a White & Golden South Sea pearls measuring 12-13 mm
Category

2010s Contemporary Multi-Strand Necklaces

Materials

Diamond, South Sea Pearl, 18k Gold, Yellow Gold

2.00 Carat Diamond Necklace G SI 14 Karat Yellow Gold 140 Diamonds 12 Grams
Located in New York, NY
2.00 Carat Natural Diamond Necklace G SI 14K Yellow Gold 16 inches 100% Natural Diamonds, Not
Category

21st Century and Contemporary American Contemporary Drop Necklaces

Materials

Diamond, Yellow Gold, 14k Gold

12 Carat Yellow and White Diamond Station Drop Necklace 18K Gold
Located in New York, NY
This luxurious design diamond drop necklace is simple but elegant. features Just under 4 carat
Category

Mid-20th Century Contemporary Pendant Necklaces

Materials

White Diamond, Yellow Diamond, 18k Gold

Dainty Diamond Daisy Necklace .12 Carats in 14K Rose Gold, April Birthstone LV
By Gabriel & Co.
Located in Austin, TX
! The diamond is 0.12 carats at the center of the just over 1/4-inch (7 mm) diameter rose gold pendant
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, Rose Gold

87.12 Carat Amethyst Necklace in 18 Karat Rose Gold with Diamonds
By Sunita Nahata
Located in Hong Kong, HK
amethyst necklace in 18K rose gold with diamonds. Amethyst: 61.040 carat octagon briollete shape - 12x10
Category

21st Century and Contemporary Hong Kong Contemporary Necklace Enhancers

Materials

Amethyst, Diamond, 18k Gold, Rose Gold

18-carat yellow gold necklace with a pendant 12 diamonds of 0.12 carats in total
Located in Monte-Carlo, MC
gold decorated with 12 brilliant round cut diamonds of 0.01 carats each, or 0.12 carats in total. Very
Category

20th Century Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

12 Carat Tanzanite Cabochon and Diamond Drop Necklace in Yellow and White Gold
By Sarosi By Timeless Gems
Located in Los Angeles, CA
cut diamonds for a unique, yet timeless look. This necklace transitions from daytime to night time
Category

21st Century and Contemporary American Artisan Drop Necklaces

Materials

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

12 Carat Citrine and Diamond Gold Slide Pendant Necklace Estate Fine Jewelry
Located in Montreal, QC
Simply Fabulous, Timeless and Finely detailed Citrine and Diamond Gold Slide Pendant. Centering a
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Citrine, Diamond, Gold, 14k Gold, Yellow Gold

Vintage 12 Carat NO HEAT GIA Sapphire and Diamond Gold Brooch Pendant Necklace
Located in Montreal, QC
approx. 12 Carats. GIA report #2235104643. Surrounded by RBC Diamonds, weighing approx. 2.85tcw
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold, Platinum

South Sea Pearl Tahitian Diamond Lariat Necklace 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
18 Karat White gold chain featuring two Pearls, one South Sea & one Tahitian measuring 12-13 MM
Category

21st Century and Contemporary American Contemporary Beaded Necklaces

Materials

Diamond, South Sea Pearl, White Gold, 18k Gold

2.08 Carat Marquise Cut Blue Sapphire and Round Natural Diamond Pendant ref1822
By Diamond Town
Located in New York, NY
. Total sapphire weight 2.08 carats. Total diamond weight 0.60 carats. Set in White Gold Diamond Town is
Category

21st Century and Contemporary Contemporary Pendant Necklaces

Materials

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

1.65 Carat Diamond Platinum Art Deco Pendant Necklace
Located in Stamford, CT
Art Deco 1930's diamond pendant necklace. 22 transitioanl and baguette cut diamonds on a 16 inch
Category

Mid-20th Century Pendant Necklaces

Materials

Diamond, Platinum

1.30 Carat Diamond Platinum Retro Style Pendant Necklace
Located in Stamford, CT
Retro style 1960’s diamond platinum pendant necklace with round, pear and baguette cut diamonds
Category

Mid-20th Century Pendant Necklaces

Materials

Diamond, Platinum

.83 Carat Tanzanite Diamond Halo Platinum Pendant Necklace
Located in Stamford, CT
Tanzanite and diamond pendant necklace. Triangular shape tanzanite with a halo of round beaded
Category

21st Century and Contemporary Italian Pendant Necklaces

Materials

Diamond, Tanzanite, Platinum

.66 Carat Diamond Rose Gold Diamond by the Yard Necklace
Located in Stamford, CT
Round brilliant cut bezel set diamond by the yard 14k rose gold necklace. 16 inches. 12 round
Category

21st Century and Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, Rose Gold, Gold

Ruby 1.29 Ct Cluster Pendant 18 Kt White Gold Round Brilliant 0.60 Carat Diamond
By Hasbani Diamonds
Located in London, GB
brilliant cut white stunning diamonds weighing a total of 0.60 carat color G/H clarity SI, the ruby weighs
Category

2010s British Modern Pendant Necklaces

Materials

Chalcedony, Turquoise, Citrine, Other, Diamond, White Diamond, Emerald, ...

14 Karat Yellow Gold 1.06 Carat Diamond Bar Necklace
Located in Great neck, NY
features 12 Natural Round White Diamonds weighing 1.06 carats. Chain length is 18" inches. -14K Gold -12
Category

21st Century and Contemporary Chinese Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

0.40 Carat Diamond/1.30 Carat Ruby 18 Karat Gold Hearts Pendant Necklace
By Sebastian Bernard
Located in Los Angeles, CA
Diamond Weight: 0.40 Ct Total Gem Weight: 1.30 Ct Total Necklace Weight: 8.0 gr Pendant Size 18.8x25.0 mm
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold

.925 Sterling Silver 1/6 Carat Diamond Heart Pendant Necklace
Located in New York, NY
Show her just how much you love her with this sweet sterling silver, 1/6 carat total weight diamond
Category

21st Century and Contemporary Indian Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Sterling Silver

.925 Sterling Silver 1/6 Carat Diamond Heart Pendant Necklace
.925 Sterling Silver 1/6 Carat Diamond Heart Pendant Necklace
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H 0.79 in W 0.6 in L 0.99 in
.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
Located in New York, NY
necklace features a heart-shaped design, symbolizing love and affection. Twelve natural, round-cut diamonds
Category

21st Century and Contemporary Indian Modern Pendant Necklaces

Materials

Diamond, White Diamond, Sterling Silver

.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
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H 0.12 in W 0.87 in L 0.99 in
Peter Suchy .53 Carat Round Diamond Platinum Halo Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Antique inspired domed round diamond Slide pendant necklace. .53ct round cut center diamond in a
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

1.65 Carat Diamond Round Emerald Cut Dangle Drop Necklace
Located in Stamford, CT
Round and Emerald cut diamond drop necklace. Emerald center stone with two dangle rows of round
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Gold, 14k Gold, White Gold

.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
Located in New York, NY
Twelve delicate, sparkling diamonds adds extra twinkle to this beautiful heart pendant necklace
Category

21st Century and Contemporary Indian Modern Pendant Necklaces

Materials

Diamond, White Diamond, Silver, Sterling Silver

.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
.925 Sterling Silver 1/10 Carat Diamond Heart Pendant Necklace
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H 0.91 in W 0.04 in L 0.71 in
0.12 Carat Diamond 14K Gold Khanda Religious Sikhism Necklace
By Oshi Jewels
Located in Bangkok, TH
spirituality. We guarantee top-notch quality with 0.12-carat diamond beautifully set in this necklace. This
Category

21st Century and Contemporary Thai Modern Pendant Necklaces

Materials

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

0.12 Carat Diamond 18K Gold Khanda Religious Sikhism Necklace
By Oshi Jewels
Located in Bangkok, TH
spirituality. We guarantee top-notch quality with 0.12-carat diamond beautifully set in this necklace. This
Category

21st Century and Contemporary Thai Modern Pendant Necklaces

Materials

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

Roman Malakov 12 millimeter South Sea Pearl and Round Diamond Pendant Necklace
By Roman Malakov
Located in New York, NY
This beautiful pearl necklace showcasing an 12 millimeter south sea pearl of golden color. Accented
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Pearl, South Sea Pearl, 18k Gold, White Gold

5.46 Carat Pear Emerald Diamond Pearl Onyx Pendant Necklace
Located in Stamford, CT
cabochon pear emerald Approximate 5.46 carats 12 rose cut diamonds Approximate .12 carats 19 Old European
Category

Early 20th Century Pendant Necklaces

Materials

Onyx, Pearl, Diamond, Emerald, Gold, 14k Gold, Yellow Gold

.85 Carat Yellow White Diamond Two-Tone Gold Drop Necklace
Located in Stamford, CT
carats 12 round diamonds .04 carats Star: 4 round diamonds .12 carats 4 yellow round diamonds .12 carats
Category

21st Century and Contemporary Drop Necklaces

Materials

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

Chopard 1.98 Carats Total Happy Spirit Collection Diamond Pendant Necklace
By Chopard
Located in New York, NY
concentric circles encased in the pendant and is set with brilliant round diamonds weighing 1.88 carats. A
Category

Early 2000s Swiss Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

14 Karat White Gold 1.06 Carat Diamond Curved Bar Necklace
Located in Great neck, NY
features 12 Natural Round White Diamonds weighing 1.06 carats. Chain length is 18" inches. -14K Gold -12
Category

21st Century and Contemporary Chinese Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, White Gold

14K White Gold 2.0 Carat Diamond Double Loop Pendant Necklace
Located in New York, NY
White Diamonds Diamond Count: Total 25 Diamonds Includes 13 Baguette and 12 Princess-Cut Diamonds
Category

21st Century and Contemporary Indian Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, 14k Gold, White Gold

14K White Gold 2.0 Carat Diamond Double Loop Pendant Necklace
14K White Gold 2.0 Carat Diamond Double Loop Pendant Necklace
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H 0.79 in W 0.6 in L 0.79 in
20.70 Carat CITRINE Diamond Yellow Gold Necklace
Located in Miami, FL
18 Carat Yellow Gold Necklace with Fancy Shape Citrine, Diamonds Pavé and Hanging Pear Shape
Category

21st Century and Contemporary French Art Deco Drop Necklaces

Materials

Citrine, Diamond, Yellow Gold, 18k Gold

Peter Suchy .58 Carat Oval Diamond Halo Platinum Slide Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Antique style diamond slide pendant necklace. Created in the Peter Suchy Workshop, antique inspired
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

GIA Certified .77 Carat Orange Yellow Fancy Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Natural fancy intense oval orange-yellow diamond pendant necklace. GIA certified natural fancy
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Diamond, Yellow Diamond, Platinum

Peter Suchy 36.16 Carat Amethyst Diamond White Gold Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Pear shape 36.16 carat amethyst and diamond pendant necklace. Pear shaped center amethyst with a
Category

21st Century and Contemporary Pendant Necklaces

Materials

Amethyst, Diamond, Gold, 14k Gold, White Gold

Emilio Jewelry 14.07 Carat Colombian Emerald Diamond Necklace
By Emilio!
Located in New York, NY
minor Colombian. 10 round diamonds .65 cts Pear diamonds 12 pcs 1.18 cts If you have another design in
Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond, Emerald

2.00 Carat Diamond Necklace G SI 14 Karat White Gold
Located in New York, NY
2.00 Carat Natural Diamond Necklace G SI 14K White Gold 16 inches 100% Natural Diamonds, Not
Category

21st Century and Contemporary American Contemporary Drop Necklaces

Materials

Diamond, 14k Gold, White Gold

11 Carat Pear Shape Colombian Emerald and Diamond Pendant Necklace Enhancer
Located in New York, NY
Introducing our extraordinary pendant necklace enhancer featuring an approximately 11 carat pear
Category

2010s Pendant Necklaces

Materials

Diamond, Emerald, 18k Gold

21.77 Carat Pear Shape Emerald and 25.04 Carat Diamond Vine Necklace
Located in Houston, TX
shaped diamonds along the entire necklace, with a total weight of 25.04ct total weight. There are
Category

21st Century and Contemporary American Drop Necklaces

Materials

Diamond, Emerald, Platinum

0.11 Carat Diamonds 14K Gold Crescent Moon Islamic Pendant Necklace
By Oshi Jewels
Located in Bangkok, TH
quality with 0.11 carat diamonds which gives us a statement necklace. This Islam necklace can be
Category

21st Century and Contemporary Thai Modern Pendant Necklaces

Materials

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

0.11 Carat Diamonds 18K Gold Crescent Moon Islamic Pendant Necklace
By Oshi Jewels
Located in Bangkok, TH
quality with 0.11 carat diamonds which gives us a statement necklace. This Islam necklace can be
Category

21st Century and Contemporary Thai Modern Pendant Necklaces

Materials

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

Estate 3.6 Carat Diamond 12.9 Carat Blue Sapphire Bib Style Platinum Necklace
Located in Miami, FL
. -Diamond and sapphire bib-style estate necklace -11 Pear shaped blue sapphires 12.90 carats (estimated) -12
Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond, Blue Sapphire, Platinum

Suzy Levian 14K Yellow Gold 1.33 Carat White Diamond Station Necklace
By Suzy Levian
Located in Great Neck, NY
secure fit. White Diamonds Diamonds: 12 Diamond cut: Round Diamond weight: 1 1/3 carats Color: G-H
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

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

Suzy Levian 14K Rose Gold 1.33 Carat White Diamond Station Necklace
By Suzy Levian
Located in Great Neck, NY
secure fit. White Diamonds Diamonds: 12 Diamond cut: Round Diamond weight: 1 1/3 carats Color: G-H
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

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

4.12 Carat Black White Diamond 18K Gold Constellation Medallion Pendant Necklace
By Butani
Located in Hong Kong, Kowloon
carats 12 Rose Cut Diamonds: 0.63 carats Diamond Quality: VS, G/H About Butani: Family-run high
Category

2010s Hong Kong Contemporary Pendant Necklaces

Materials

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

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12 Carat Diamond Necklace For Sale on 1stDibs

You are likely to find exactly the 12 carat diamond necklace you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 18k Gold and White Gold, this item was constructed with great care. Our collection of these items for sale includes 58 vintage editions and 210 modern creations to choose from as well. Making the right choice when shopping for a 12 carat diamond necklace may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. For this particular piece, .5 Carat and 1 Carat are consistently popular carat weights. There have been many well-made iterations of the classic 12 carat diamond necklace over the years, but those made by LB Exclusive, TJD and Alberto are often thought to be among the most beautiful. A round cut version of this piece has appeal, but there are also pear cut and oval cut versions for sale. There aren’t many items for men if you’re seeking a 12 carat diamond necklace, as most of the options available are for women and unisex.

How Much is a 12 Carat Diamond Necklace?

The price for a 12 carat diamond necklace starts at $222 and tops out at $357,500 with these necklaces, on average, selling for $7,800.

Finding the Right Necklaces for You

We are fortunate to know much of the world’s long and dazzling history of necklaces, as this type of jewelry was so treasured that it was frequently buried with its owners.

Lapis lazuli beads adorned necklaces unearthed from the royal graves at the ancient Iraqi civilization of Sumer, while the excavation of King Tut’s burial chamber revealed a sense of style that led to a frenzy of Art Deco designs, with artisans of the 1920s seeking to emulate the elegant work crafted by Ancient Egypt’s goldsmiths and jewelry makers. 

In ancient times, pendant necklaces worn by royalty and nobles conferred wealth and prestige. Today, wearing jewelry is about personal expression: Luxury diamond necklaces exude confidence and can symbolize the celebratory nature of a deep romantic relationship, while paper-clip chain-link necklaces designed by the likes of goldsmith Faye Kim are firmly planted in the past as well as the present. Kim works exclusively with eco-friendly gold, and these fashionable, fun accessories owe to the design of 19th-century watch fobs. 

For some, necklaces are thought of as being a solely feminine piece, but this widely loved accessory has been gender-neutral for eons. In fact, just as women rarely took to wearing a single necklace during the Renaissance, men of the era layered chains and valuable pendants atop their bejeweled clothing. In modern times, the free-spirited hippie and counterculture movements of the 1960s saw costume-jewelry designers celebrating self-expression through colorful multistrand necklaces and no shortage of beads, which were worn by anyone and everyone. 

Even after all of these years, the necklace remains an irrefutable staple of any complete outfit. Although new trends in jewelry are constantly emerging, the glamour and beauty of the past continue to inform modern styles and designs. In a way, the cyclical history of the necklace differs little from its familiar looped form: The celebrated French jewelry house Van Cleef & Arpels found much inspiration in King Tut, and, now, their Alhambra collection is a go-to for modern royals. Vintage necklaces designed by David Webb — whose work landed him on the cover of Vogue in 1950, two years after opening his Manhattan shop — were likely inspired by the ornamental styles of ancient Greece, Mesopotamia and Egypt

On 1stDibs, browse top designers like Cartier, Tiffany & Co. and Bulgari, or shop by your favorite style, from eye-catching choker necklaces to understated links to pearl necklaces and more. 

Questions About 12 Carat Diamond Necklace
  • 1stDibs ExpertFebruary 22, 2021
    The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.
  • 1stDibs ExpertNovember 6, 2023
    There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.