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15 Carat Diamond Tennis Necklace - Round Diamond
Located in Los Angeles, CA
Necklace Information Metal : 14k Gold Diamond Cut : Round Natural Diamond Total Diamond Carats : 1 Carat
Category

2010s American Modern Necklace Enhancers

Materials

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

15 Carat Green Emerald Diamond Pendant Necklace
By Antinori Fine Jewels
Located in Rome, IT
sophistication and grace. Presenting our exclusive Diamond and Emerald Necklace, the perfect complement to all
Category

2010s Italian Modern Choker Necklaces

Materials

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

18 Karat Tahitian Pearl Diamond Pendant 0.83 Carats 15 MM
By Harbor Diamonds
Located in New York, NY
18 Karat white gold pendant featuring one grey Tahitian Pearl measuring 15 mm with a diamond cap of
Category

2010s Contemporary Pendant Necklaces

Materials

Diamond, Pearl, White Gold

.15 Carat Diamond Yellow Gold Freeform Pendant Necklace
Located in Stamford, CT
Diamond pendant necklace. Brilliant cut diamond bezel set in an 18k yellow gold freeform swirl
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

15 Carat Round Brilliant Cut Diamond Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
15.45 cttw. Graduated Tennis Necklace in 14K Yellow Gold Material: 14k Yellow Gold Style: Graduated
Category

2010s Unknown Contemporary Multi-Strand Necklaces

Materials

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

15 Carat Combine Mix Shape Diamond Necklace Certified
Located in New York, NY
Diamond Necklace: Carat Weight: 15.00 Carats Style: Combine Mix Shape Chains: 14 Karat Rose Gold
Category

2010s American Chain Necklaces

Materials

Diamond, 14k Gold, Rose Gold

15 Carat Morganite & Diamond Yellow Gold Rope Necklace
Located in Santa Barbara, CA
This beautiful 15 carat morganite and diamond pendant necklace is crafted with a modern
Category

2010s Modern Pendant Necklaces

Materials

Diamond, Morganite, Gold, 14k Gold, Yellow Gold

Tahitian Pearl Diamond Pendant 0.83 Carats 15 MM 18 Karat White Gold G-H SI
By Harbor Diamonds
Located in New York, NY
18 Karat white gold pendant featuring one light grey Tahitian Pearl measuring 15 mm with a diamond
Category

2010s Contemporary Pendant Necklaces

Materials

Diamond, Pearl, 18k Gold, White Gold

South Sea Pearl Diamond Slider Pendant 0.25 Carat 15-16 MM 18 Karat Yellow Gold
By Harbor Diamonds
Located in New York, NY
18 Karat Yellow gold slider pendant necklace featuring one South Sea Pearl measuring 15-16 mm with
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, South Sea Pearl, Yellow Gold

.15 Carat Diamond Bar Link by the Yard Platinum Necklace
Located in Stamford, CT
Unqiue Diamond link by the yard 20 inch Platinum bar link chain, circa 1930-1940.   5 old mine
Category

Mid-20th Century Link Necklaces

Materials

Diamond, Platinum

30 Carat Diamond Cluster Necklace
Located in Los Angeles, CA
This one of a kind, priceless diamond cluster necklace featuring round, pear and marquise diamonds
Category

2010s American Modern Necklace Enhancers

Materials

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

Rose De France Diamond Halo Paperclip Pendant Necklace 22.60 Carats 14KT Gold
By Harbor Diamonds
Located in New York, NY
with 69 round brilliants weighing 0.49 carats on a paperclip chain. Amethyst: 20 MM* 15 MM Pendant
Category

2010s Contemporary Pendant Necklaces

Materials

Amethyst, Diamond, Gold, 14k Gold, Rose Gold

South Sea Pearl Diamond Halo Link Drop Necklace 4.20 Carat 18 Karat
By Harbor Diamonds
Located in New York, NY
Impressive 18K Rose gold drop necklace featuring 8 South Sea Pearls measuring 13-15 mm flanked with
Category

2010s American Contemporary Drop Necklaces

Materials

Diamond, South Sea Pearl, Rose Gold

South Sea Pearl Diamond Halo Link Drop Necklace 4.20 Carat 18 Karat
By Harbor Diamonds
Located in New York, NY
Impressive 18K Rose gold drop necklace featuring 8 South Sea Pearls measuring 13-15 mm flanked with
Category

2010s American Contemporary Drop Necklaces

Materials

Diamond, South Sea Pearl, White Gold

15 Carat Heart Topaz and Diamond Gold Pendant Necklace
Located in Montreal, QC
Hand set 15 Carat Heart shaped Topaz, approx. 1.25” long, accented by Diamonds, approx. 0.21tcw. Hand
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Diamond, Topaz, Blue Topaz, Gold, 14k Gold, Yellow Gold

0.86 Carat Curved Up and Down Natural Diamond Bar Necklace in 14W Gold ref2099
By Diamond Town
Located in New York, NY
craftsmanship. This necklace features 15 brilliant, sparkling round natural diamonds. Their inherent beauty and
Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Important Lightning Ridge 15 Carat Black Opal Diamond Vintage Necklace
Located in Santa Barbara, CA
This stunning black opal and diamond necklace is sure to impress. The nearly 15 carat centerpiece
Category

Vintage 1960s Art Deco Pendant Necklaces

Materials

Diamond, Opal, Black Opal, Platinum

15 Carat Emerald and 5.50 Carat Old European Diamond Bib Necklace Rare Estate
Located in Miami, FL
Single Cut Diamonds 7pcs Natural NO OIL to F-1 Approximately 15.00 carats of Emeralds Measures 15 inches
Category

Vintage 1950s Drop Necklaces

Materials

Diamond, Emerald, 18k Gold, Palladium, Gold, White Gold, Platinum

Le Vian 15 Carat White Diamond Blue Sapphire White Gold Necklace
By Le Vian
Located in Great Neck, NY
Sapphire Necklace with 9.75 Carats of Blue Sapphire and 5.75 Carats of White Diamonds.
Category

2010s More Necklaces

Materials

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

15 ct Round Brilliant Cut Diamond Riviera Diamond Line Necklace
By Antinori Fine Jewels
Located in Rome, IT
15 ct Round Brilliant Cut Diamond Riviera Diamond Line Necklace in 14K White Gold 17". The
Category

2010s Italian Modern Chain Necklaces

Materials

Diamond, White Diamond, Platinum

Diamond Triangle Sunburst Pendant .15 Carats on 18" Necklace in 14K White Gold
By Five Star Jewelry
Located in Austin, TX
. The details for this beautiful diamond triangle necklace are listed below: Metal Quality: 14 karat
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

French 1967 Mauboussin 15 Carat Diamonds Platinum 18 Karat White Gold Necklace
By Mauboussin
Located in Poitiers, FR
safety hook. Total diamond weight : approximately 15 carats. Total length : approximately 40 cm, width at
Category

Vintage 1960s French Retro Link Necklaces

Materials

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

Graduated Diamond Riviera Necklace 19.45 Carats in 14k White Gold 15 inches
Located in La Jolla, CA
Graduated Diamond Riviera Necklace 19.45 Carat Total Weight in 14k White Gold 15 inches Diamond
Category

21st Century and Contemporary North American Choker Necklaces

Materials

Diamond, 14k Gold, White Gold

Roman Malakov 0.10 Carat Round Diamond Bezel Solitaire Pendant Necklace
By Roman Malakov
Located in New York, NY
A simple and versatile solitaire pendant necklace showcasing a single 0.10 carat round diamond in a
Category

21st Century and Contemporary Contemporary Necklace Enhancers

Materials

Diamond, 14k Gold, Yellow Gold

7.28 Carat Diamond Platinum Necklace
Located in Stamford, CT
1950's diamond platinum necklace. 209 graduated straight baguettes separated by 19 round brilliant
Category

Mid-20th Century More Necklaces

Materials

Diamond, Platinum

Heart .15 Carat MOM Diamond White Gold Pendant
Located in Laguna Hills, CA
heart and is set with .15 carat round diamonds. The pendant measures 1 in long and is made of 10 karat
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, 10k Gold, White Gold

Sliced 15 Carat Multi-Color Stones 0.05 Carat Diamonds 14 Karat Gold Necklace
Located in Los Angeles, CA
Wearable Length: 16" Pendant Measurement: 68 mm * 16.5 mm Metal: 14K Yellow Gold Stone Type: 15 CT
Category

2010s Unknown Pendant Necklaces

Victorian 15 Karat Gold and Platinum and 5.0 Carat Diamond Horseshoe Necklace
Located in New York, NY
Victorian 15k Yellow Gold and Platinum and 5.0cts Old Mine Cut Diamond Horseshoe Necklace c.1880s
Category

Antique 19th Century Unknown Victorian More Necklaces

Materials

Diamond, Yellow Gold, 15k Gold, Platinum, Gold

10K Yellow Gold .15 Carat Diamond Heart Pendant
Located in Laguna Hills, CA
-plated chain. This elegant necklace is the perfect way to show someone special you care. 10 Karat diamond
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, 10k Gold, Yellow Gold

1.00 Carat Diamond by the Yard Necklace G SI 14 Karat White Gold 15 Pointers
Located in New York, NY
1.00 Carat Diamond by the Yard Necklace G SI 14K White Gold 15 pointers 18 inch 100% Natural
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, White Gold

4.30 Carat Diamond by the Yard Necklace G SI 14 Karat White Gold 15 Pointers
Located in New York, NY
4.30 Carat Diamond by the Yard Necklace G SI 14K White Gold 15 pointers 60 inches 30 stations 100
Category

21st Century and Contemporary American Contemporary Link Necklaces

Materials

Diamond, White Gold, 14k Gold

7.55 Carat Diamond by the Yard Necklace G SI 14 Karat White Gold 15 Pointer
Located in New York, NY
7.55 Carat Diamond by the Yard Necklace G SI 14K White Gold 18 inches 100% Natural Diamonds, Not
Category

21st Century and Contemporary American Contemporary Link Necklaces

Materials

Diamond, White Gold, 14k Gold

Antique 1.01 Carat Diamond and 15 Carat White Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique1.01 carat diamond and 15 carat white gold pendant; part of
Category

20th Century Unknown Pendant Necklaces

Materials

Diamond, White Gold

Antique 1.01 Carat Diamond and 15 Carat White Gold Pendant
Antique 1.01 Carat Diamond and 15 Carat White Gold Pendant
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H 0.22 in W 0.31 in L 0.53 in
Emerald Cut Diamond Necklace Illusion Set
By Diamond Scene New York
Located in New York, NY
A FABULOUS piece!! 27.64 carats of F color VS clarity baguette and round diamonds set as single
Category

21st Century and Contemporary Link Necklaces

Materials

Diamond, White Diamond, 18k Gold

12 Carat Diamond Platinum Necklace
Located in Bay Harbor Islands, FL
1940's Diamond necklace set with round, baguette and triangular cut diamonds weighing approximately
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
South Sea Pearl Sapphire Slide Necklace 0.60 Carat 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
18K White gold slide necklace featuring one South Sea Pearl measuring 14-15 mm with scattered blue
Category

2010s American Contemporary Pendant Necklaces

Materials

South Sea Pearl, Sapphire, White Gold

Edwardian 15 Carat Gold Pendant with Diamond
Located in Chipping Campden, GB
Incredibly sweet 15ct gold pendant set with a diamond. The chain is decorative and so pretty
Category

Antique Early 1900s British Edwardian Pendant Necklaces

Materials

Diamond, Gold

La Nouvelle Bague 18 Karat Gold Necklace with .15 Carat Diamond and Enamel Arrow
By Nouvelle Bague
Located in New York, NY
with an arrow motif of pave diamonds ,blue enamel, and rose gold. The necklace measures 17" long
Category

21st Century and Contemporary Italian Contemporary Choker Necklaces

Materials

Diamond, 18k Gold, Rose Gold, White Gold, Enamel

10.98 Carat Diamond X Link Platinum Necklace
Located in Stamford, CT
Solid platinum diamond necklace with 10.98 carats of ideal round diamonds in a graduated handmade
Category

21st Century and Contemporary Link Necklaces

Materials

Diamond, Platinum

Diamonds by the Yard 15 Stones Necklace Diamonds Yard Pendant Necklace 14kt Gold
Located in Jupiter, FL
Stunning diamonds by the yard necklace, adjustable from 16-18-20" The diamonds are ethically
Category

21st Century and Contemporary North American Modern Link Necklaces

Materials

Diamond, 14k Gold, White Gold

775 Carat Sapphire and Diamond Necklace
Located in Miami, FL
18 Karat White Gold Necklace Set with Approximately 768 Carat of Blue Sapphire and 6.25 Carats of
Category

21st Century and Contemporary American More Necklaces

Materials

Sapphire, Blue Sapphire, Diamond, Pink Sapphire, 18k Gold

Natural Emerald Diamond Pendant Necklace 15" 14k WG 4.06 TCW Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Emerald Diamond Pendant Necklace 15" 14k WG 4.06 TCW Certified
Category

2010s Italian Pendant Necklaces

Materials

Diamond, Emerald, 14k Gold

15 TCW Diamond Tennis Necklace in 14k Rose Gold
Located in Miami, FL
Gorgeous 15 carats Diamond tennis necklace crafted in 14k rose gold with 140 diamonds. Elegant and
Category

21st Century and Contemporary More Necklaces

Materials

Diamond, Rose Gold

Two Way Diamond Cuban Link Choker Necklace 18 Karat Yellow Gold 75.4 Grams
By Harbor Diamonds
Located in New York, NY
18 Karat yellow gold choker chain featuring a Cuban motif design and 15 diamond links weighing
Category

1990s Contemporary Choker Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Yellow & White Diamond South Sea Pearl Pendant 0.37 Carats 18 Karat
By Harbor Diamonds
Located in New York, NY
yellow diamond weighing 0.25 carats flanked with round brilliants weighing 0.12 carats. Color G-H Clarity
Category

2010s Contemporary Pendant Necklaces

Materials

White Diamond, South Sea Pearl, White Gold

0.15 Carat Diamond Yellow Gold Chain Necklace
By DGI
Located in Los Angeles, CA
This Chain Necklace has an arrow as its shape and it has 15 Round Cut Diamonds that weigh 0.15
Category

2010s American Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

2.09 Carat Diamond Yellow Gold Chain Necklace
By DGI
Located in Los Angeles, CA
This Chain Necklace has a V-Shaped Necklace that has 23 Round Cut Diamonds (Clarity: SI, Color: F
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

White Gold Diamond Pendant Necklace 15" - 14k Round Brilliant .16ctw
Located in Greensboro, NC
Metal Content: 14k White Gold Stone Information Natural Diamond Carat(s): .15ct Cut: Round
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

14k Gold Diamond Star Necklace Star of David Necklace Open Star Necklace
By Oshi Jewels
Located in Bangkok, TH
Diamond Star Necklace is made of 14K solid gold available in three colors of gold, White Gold
Category

21st Century and Contemporary Thai Modern Necklace Enhancers

Materials

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

Onyx & Diamond cocktail necklace 18KT yellow gold 15" chocker
Located in Jupiter, FL
Evening cocktail necklace made with natural onyx and diamonds, completed in 18KT yellow gold
Category

Antique 18th Century Unknown Early Victorian Choker Necklaces

Materials

Diamond, Onyx, 18k Gold, Yellow Gold

Bespoke 1.97 Carat Diamond Solitaire Necklace
Located in Hummelstown, PA
Effortlessly beautiful, a 1.97 carat European-cut diamond shimmers from inside a platinum bezel
Category

2010s Pendant Necklaces

Materials

Diamond, 14k Gold, Platinum

Bridget Station Necklace 15 Pointers Each Round Diamond Bezel Set
Located in New York, NY
​Looking for an exquisite diamond station necklace that will make you feel like a million bucks
Category

2010s American Link Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Movado Diamond Journey Dangle Necklace & Earrings 15 3/4" White Gold 18k .57ctw
By Movado
Located in Greensboro, NC
Cut: Round Brilliant Color: G Clarity: VS1 - VS2 Stone Note: Necklace Natural Diamonds Carat(s
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Yellow Gold Diamond Orb Pendant Necklace 15 3/4" - 18k Round .25ctw Opens
By Katherine Jetter
Located in Greensboro, NC
Brand: Katherine Jeter Metal Content: 18k Yellow Gold Stone Information Natural Diamonds Carat(s
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

1.10 Carat Diamond Gold Chain Necklace
Located in New York, NY
diamonds that weigh approximately 1.10ct. The color of these diamonds is G with VS clarity. The necklace
Category

20th Century Link Necklaces

Materials

Diamond, 14k Gold

14K Yellow Gold 0.22 Carat Diamond Star Necklace
Located in Great neck, NY
Pavé-set diamonds sparkle on 14k gold stars that curve in the center of this bar necklace. The
Category

21st Century and Contemporary Chinese Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Edwardian 0.52 Carat Diamond and Yellow Gold Necklace
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.52 carat diamond, 15 karat yellow gold and platinum set pendant; part of
Category

Vintage 1910s Unknown Pendant Necklaces

Materials

Diamond, Yellow Gold, Platinum

Edwardian 0.52 Carat Diamond and Yellow Gold Necklace
Edwardian 0.52 Carat Diamond and Yellow Gold Necklace
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H 1.14 in W 0.83 in D 0.19 in Dm 0.83 in L 18 in
Yellow Gold Sapphire & Diamond Heart Pendant Necklace 15 3/4" - 14k Rnd .85ctw
Located in Greensboro, NC
): .60ctw Cut: Round Color: Blue Natural Diamonds Carat(s): .25ctw Cut: Round Brilliant Color: G Clarity
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Diamond Gold Necklace, 1.01 Carat Diamond 14k Gold
Located in The Hague, ZH
Diamond Gold Necklace, 1.01 carat Diamond 14k Gold The necklace is 38 cm long (15 inch) and 0.8 mm
Category

21st Century and Contemporary Unknown Modern Pendant Necklaces

Materials

Diamond, 14k Gold

Yellow Gold Diamond Curb Chain Necklace 15 1/4" - 10k Round Brilliant 6.48ctw
Located in Greensboro, NC
Metal Content: 10k Yellow Gold & 10k White Gold Stone Information Natural Diamonds Carat(s
Category

21st Century and Contemporary Chain Necklaces

Materials

Diamond, 10k Gold, White Gold, Yellow Gold

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15 Carat Diamond Necklace For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 15 carat diamond necklace for your needs in our varied inventory. Frequently made of Gold, White Gold and Yellow Gold, this item was constructed with great care. You can easily find a 153 antique edition and 225 modern creations to choose from as well. You’re likely to find the perfect 15 carat diamond necklace among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. There have been many well-made iterations of the classic 15 carat diamond necklace over the years, but those made by LB Exclusive, TJD and Roman Malakov are often thought to be among the most beautiful. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and pear cut cut versions available here, too. When shopping for a 15 carat diamond necklace, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 15 Carat Diamond Necklace?

The price for a 15 carat diamond necklace starts at $145 and tops out at $140,000 with these necklaces, on average, selling for $4,169.

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 15 Carat Diamond Necklace
  • 1stDibs ExpertFebruary 27, 2024
    Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.
  • 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.