Explore the diversity of our diamond necklace selection, whether it’s a modern pairing with pearls, a showstopping statement piece or a streamlined silhouette. <a href="https://www.sothebys.com/en/buy/luxury/jewelry/diamond" rel="noopener noreferrer" target="_blank">All Diamonds</a> | <a href="https://www.sothebys.com/en/buy/luxury/jewelry" rel="noopener noreferrer" target="_blank">All Jewelry</a>

Diamond Necklaces

Composed of baguette cut diamonds arranged on a link necklace.<ul><li>Diamonds weighing a total of approximately 3.00 carats</li><li>Signed Kieselstein-Cord</li><li>18 karat yellow gold</li><li>Total weight 77.33 grams</li><li>Length 16 inches, width ¼ inch</li></ul>

Gold and Diamond Link Necklace

Composed of cultured pearls on a knotted strand, completed by a clasp centering a cushion cut sapphire and surrounded by round brilliant cut diamonds.<ul><li>Cultured pearls measuring 8.50 - 12.50 mm</li><li>Sapphire weighing approximately 7.85 carats</li><li>Diamonds weighing a total of approxiamately 0.95 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">Van Cleef &amp; Arpels</a> with serial number</li><li>French hallmark</li><li>Platinum</li><li>Total weight 69.62 grams</li><li>Length 23 inches, width ⅝ inch</li><li>This item is final sale and not eligible for return</li></ul>

Vintage Platinum, Cultured Pearl, Sapphire and Diamond Necklace

Composed of gold links set with hematite, accented by 26 round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.75 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/bvlgari" rel="noopener noreferrer" target="_blank">Bvlgari</a>, with serial numbers</li><li>Italian registry marks</li><li>18 karat yellow gold</li><li>Total weight 174.80 grams</li><li>Length 15 inches</li></ul>

Gold, Hematite and Diamond Collar Necklace

Composed of 49 fancy shaped diamonds.<ul><li>Diamonds weighing a total of 37.10 carats</li><li>Platinum</li><li>Inner circumference 17 inches</li><li>Accompanied by 49 GIA reports, stating that the diamonds are D-F color and IF-SI1 clarity</li></ul>

Platinum and 37.10ctw Fancy Cut Diamond Necklace

Composed of round brilliant cut diamonds arranged in a stylized sunburst motif.<ul><li>Diamonds weighing a total of approximately 6.70 carats with the center diamond weighing approximately 0.80 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/buccellati" rel="noopener noreferrer" target="_blank">Buccellati </a>Italy</li><li>18 karat white and yellow gold</li><li>Total weight 32.04 grams</li><li>Pendant length 3 inches, width 2 inches, chain length 17 inches</li></ul>

Vintage White Gold, Gold and Diamond Convertible Brooch Pendant Necklace

Of the iconic Panthère collection, composed of two panther heads with lacquer inlays, onyx noses and tsavorite garnet eyes and diamond accented tassels.<ul><li>Diamonds are approximately 1.00 carat</li><li>18 karat yellow gold</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a></li><li>Total weight 155 grams</li><li>Inner circumference 31 inches</li></ul>

Gold, Tsavorite, Onyx and Diamond Double Panthère Tassel Necklace 

Composed of 7 round brilliant cut diamonds arranged as a flower.<ul><li>Diamonds weighing a total of approximately 0.90 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">VCA</a> with serial number</li><li>18 karat yellow gold</li><li>Total weight 4.40 grams</li><li>Length 17 inches</li></ul>

Gold and Diamond Fleurette Necklace

Of the B.zero1 collection, composed of round brilliant cut diamonds.<ul><li>Diamonds weighing a total of 0.87 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/bvlgari" rel="noopener noreferrer" target="_blank">Bvlgari</a></li><li>Italian registry mark</li><li>18 karat white gold</li><li>Total weight 15.53 grams</li><li>Length 15 - 18 inches; Pendant diameter ½ inch</li></ul>

White Gold and Diamond B.zero1 Pendant Necklace

Of the iconic Victoria collection, set with 4 marquise cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.80 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/tiffany-&amp;-co" rel="noopener noreferrer" target="_blank">Tiffany &amp; Co.</a> Italy</li><li>Platinum</li><li>Total weight 3.07 grams</li><li>Length 16 inches, size large</li><li>Accompanied by a signed box</li><li>This item is final sale and not eligible for return</li></ul>

Platinum and 0.80ctw Diamond Large Victoria Pendant Necklace

Of the iconic Alhambra collection and of a limited edition style, composed of obsidian and centering a round brilliant cut diamond.<ul><li>Diamond weighing 0.05 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">VCA</a> with serial number</li><li>18 karat rose gold</li><li>Total weight 6.33 grams</li><li>Length 16 inches</li><li>Accompanied by a signed box and certificate of authenticity</li></ul>

Rose Gold, Obsidian and Diamond Vintage Alhambra Pendant Necklace

Of the iconic Alhambra collection and a limited edition style, composed of tiger's eye and centering a round brilliant cut diamond.<ul><li>Diamond weighing approximately 0.05 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">VCA </a>with serial number</li><li>18 karat rose gold</li><li>Total weight 6.20 grams</li><li>Length 16 inches</li><li>Accompanied by a signed pouch and service papers of authenticity</li></ul>

Rose Gold, Tiger's Eye and Diamond Vintage Alhambra Pendant Necklace

Of the iconic Fil de Camélia collection, composed of round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 2.80 carats</li><li>All signed Chanel with serial number</li><li>French hallmarks on the necklace and earrings</li><li>18 karat white gold</li><li>Total weight 24.27 grams</li><li>Earring diameter ¾ inch</li><li>Size 7</li><li>Necklace length 15 - 16 inches, Pendant diameter ¾ inch</li><li>Ring is accompanied by a signed box and pouch</li><li>Necklace and earrings are both accompanied by a signed box, pouch and certificate of authenticity</li><li>This set is final sale and not eligible for return</li></ul>

White Gold and Diamond Fil de Camélia Necklace, Ring, and Earrings Set

Composed of pear and baguette cut diamonds, accented by one terminating pear cut <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">ruby</a>.<ul><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">Ruby</a> weighing approximately 2.40 carats</li><li>Diamonds weighing a total of approximately 15.27 carats</li><li>Circa 1950s</li><li>Platinum</li><li>Total weight 52.95 grams</li><li>Interior circumference 15½ inches, drop length 2 inches</li></ul>

Vintage Platinum, Ruby and Diamond Bow Collar Necklace

Composed of high polish yellow gold interspaced by areas of white gold set with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.75 carat</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/tiffany-&amp;-co" rel="noopener noreferrer" target="_blank">Tiffany &amp; Co.</a></li><li>18 karat yellow and white gold</li><li>Total weight 49.90 grams</li><li>Length 15 inches, width ¼ inch</li><li>Accompanied by a signed pouch</li><li>This item is final sale and not eligible for return</li></ul>

Vintage Gold and Diamond Necklace

Featuring a large malachite pendant adorned with the Gemini zodiac sign, accented by 1 round diamond.<ul><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">VCA</a>, with serial numbers</li><li>Marked Italy on the pendant</li><li>18 karat yellow gold</li><li>Total weight 73.20 grams</li><li>Pendant diameter 2¼ inches, necklace length 23¾ inches</li></ul>

Vintage Gold, Malachite and Diamond Gemini Pendant Necklace

Featuring an American eagle design, set with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 4.05 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a> with serial numbers</li><li>French assay marks and maker's marks</li><li>18 karat yellow gold</li><li>Total weight 173.90 grams</li><li>Inner circumference 13⅘ inches</li></ul>

Gold and Diamond Egyptian Falcon Horus Collar Necklace

<ul><li>Composé de six rangs de perles de cultures blanches, ponctués de diamants taille brillant sertis clos</li><li>Poinçon français pour l'or 18K (750°/00)</li><li>Longueur 340 mm, poids brut 165.29 g</li></ul> <ul><li>Composed of six rows of cultured pearls, highlighted with collet-set brilliant-cut diamonds</li><li>French assay mark for 18 carat gold</li><li>Length 340mm, gross weight 165.29 grams</li></ul>

Collier perles de culture et diamants | Cultured pearl and diamond necklace

Composed of carved white and black mother of pear, accented by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 1.10 carats</li><li>Signed Marina B with serial number</li><li>Italian registry mark</li><li>18 karat yellow gold</li><li>Total weight 78.00 grams</li><li>Length 32 inches, width ¾ inch</li></ul>

Gold, Mother of Pearl and Diamond Longchain Necklace

Centering a pear cut Fancy Intense <a href="https://www.sothebys.com/en/buy/luxury/jewelry/yellow-diamonds" rel="noopener noreferrer" target="_blank">Yellow diamond</a>, accented by pear, marquise and round brilliant cut white diamonds.<ul><li>Fancy Intense <a href="https://www.sothebys.com/en/buy/luxury/jewelry/yellow-diamonds" rel="noopener noreferrer" target="_blank">Yellow diamond</a> weighing 35.31 carats</li><li>White diamonds weighing a total of approximately 47.00 carats</li><li>Platinum</li><li>Total weight 38.00 grams</li><li>Necklace length 16½ inches; drop length 1½ inches</li><li>Accompanied by GIA report no. 2145952743, dated 2 October 2012, stating that the 35.31 carat diamond is Fancy Intense Yellow color and VS2 clarity with No Fluorescence</li><li>Accompanied by GIA report no. 24155411814, dated 24 May 2013, stating that the 1.50 carat diamond is E color and VS1 clarity with No Fluorescence</li></ul>

Platinum, 35.31ct Pear Shape Fancy Intense Yellow Diamond and Diamond Pendant Necklace

Of a bombé design, composed of 6 rows of round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 75.00-80.00 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a>, with serial numbers</li><li>French assay marks </li><li>Platinum</li><li>18 karat white gold for the clasp</li><li>Total weight 215.54 grams</li><li>Length 17¾ inches, width ½ inch</li><li>Accompanied by a GCS London report, no.5784-1263, dated 02022024</li></ul>

Platinum, White Gold and Diamond Collar Necklace

Composed of oval and pear shaped <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphires</a>, accented by round brilliant cut diamonds.<ul><li>Sapphires weighing a total of approximately 14.80 carats</li><li>Diamonds weighing a total of approximately 15.70 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a> London</li><li>18 karat yellow gold</li><li>Total weight 38.25 grams</li><li>Length 16 inches, Pendant Brooch length 1¾ inches, width 1¼ inches</li><li>Accompanied by a signed pouch</li><li>Accompanied by GIA report no. 1178731796, dated 18 July 2014, stating that the 22 blue stones are Natural Sapphire with Inconclusive Origin</li><li>Accompanied by Lotus report no. 8664-8781, dated 25 October 2016, stating that 5 stones selected at random are Natural Sapphire, showing Heat and No Heat</li></ul>

Vintage Gold, Sapphire and Diamond Convertible Brooch Pendant Necklace

Composed of oval shaped <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphires</a> and accented by round brilliant cut diamonds.<ul><li>Sapphires weighing a total of 46.26 carats, averaging 0.50 carat each</li><li>Diamonds weighing a total of 6.73 carat</li><li>18 karat white gold</li><li>Stamped with stone weights</li><li>Total weight 66.29 grams</li><li>Interior circumference 15½ inches, width ½ inch</li></ul>

White Gold, 46.26ctw Sapphire and Diamond Collar Necklace

Centering a pear cut diamond, with alternating marquise cut and baguette cut diamonds.<ul><li>Pear cut diamond weighing approximately 0.75 carat</li><li>Marquise cut diamonds weighing a total of approximately 25.30 carats, ranging in size from 0.50 carat to 0.25 carat</li><li>Baguette cut diamonds weighing a total of approximately 12.60 carats, on average 0.19 carat each</li><li>Platinum</li><li>Total weight 55.32 grams</li><li>Interior circumference 15¾ inches, width 5⁄16 inch</li></ul>

Platinum and 38.65ctw Diamond Collar Necklace

Centering a heart shaped Fancy Purple-Pink diamond, surrounded by 20 round brilliant cut pink diamonds and 19 round brilliant cut colorless diamonds.<ul><li>Fancy Purplish Pink diamond weighing 0.50 carat</li><li>Round brilliant cut pink diamonds weighing a total of approximately 0.15 carat</li><li>Round brilliant cut near colorless diamonds weighing a total of approximately 0.05 carat</li><li>18 karat rose gold and white gold</li><li>Total weight 3.43 grams</li><li>Necklace length 16 inches</li><li>Accompanied by GIA report no.2428059866, dated 22 February 2022, stating that the 0.50 carat diamond is natural Fancy Purple-Pink color and VS2 clarity</li></ul>

Rose Gold, White Gold, 0.50ct Heart Shaped Fancy Purple-Pink and Diamond Pendant Necklace

Set with 35 heart brilliant cut diamonds and 37 round brilliant cut diamonds in graduated sizes.<ul><li>Heart brilliant cut diamonds weighing a total of 39.56 carats</li><li>Round brilliant cut diamonds weighing a total of 11.10 carats</li><li>18 karat white gold</li><li>Total weight 49.90 grams</li><li>Length 16 inches</li><li>Accompanied by 35 GIA reports, stating that the 35 heart brilliant cut diamonds are weighing 2.40-0.50 carat each, with D-I color and VS1-SI2 clarity</li><li>Accompanied by 37 GIA reports, stating that the 37 round brilliant cut diamonds are weighing 0.30 carat each, with E color and SI1 clarity</li></ul>

White Gold, 39.56ctw Heart Shape Diamond and 11.10ctw Round Brilliant Cut Diamond Necklace 

Set with marquise shaped rubies and round brilliant cut diamonds.<ul><li>Rubies weighing a total of approximately 5.85 carats</li><li>Diamonds weighing a total of approximately 1.45 carats</li><li>Marker's mark of Oscar Heyman &amp; Brothers</li><li>18 karat yellow gold</li><li>Total weight 63.60 grams</li><li>Length 16 inches</li></ul>

Gold, Diamond and Ruby Collar Necklace

Composed of 2 intertwine necklaces, set with 233 round diamonds.<ul><li>Diamonds weighing a total of approximately 40.00 carats</li><li>French assay marks and makers marks</li><li>18 karat yellow gold</li><li>Total weight 63.50 grams</li><li>Length 17 inches</li></ul>

Gold and Diamond Twisted Collar Necklace

Of Cartier Nouvelle Vague collection, set with Hematite, amethyst, smoky quartz and pink opal panels, round diamonds.<ul><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a>, with serial numbers</li><li>French marks and maker's mark</li><li>18 karat rose gold</li><li>Total weight 61.50 grams</li><li>Necklace length 32 inches; pendant length 1⅝ inches, width 1 inch</li></ul>

Rose Gold, Diamond, Hematite, Amethyst, Opal, and Rose Quartz Nouvelle Vague Pendant Necklace

Composed of white cultured pearls and accented by round brilliant cut diamonds.<ul><li>Cultured pearls measuring 7.00 - 7.50 mm</li><li>Diamonds weighing a total of approximately 2.70 carats</li><li>Signed Giovane, Italy</li><li>18 karat yellow gold</li><li>Total weight 143.18 grams</li><li>Length 17 inches, width ⅝ inch</li><li>This item is final sale and not eligible for return</li></ul>

Vintage Gold, Cultured Pearl and Diamond Collar Necklace

Composed of a two tone braided link design and centering round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 2.00 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/cartier" rel="noopener noreferrer" target="_blank">Cartier</a> with serial number</li><li>18 karat yellow and white gold</li><li>Circa 1992</li><li>Total weight 57.00 grams</li><li>Length 16 inches, width ⅓ inch</li><li>Accompanied by a signed folio and certificate of authenticity</li></ul>

Vintage Gold, White Gold and Diamond Collar Necklace

Composed of baguette cut diamonds set in a V shaped collar necklace, centering a convertible round brilliant cut diamond drop.<ul><li>Diamonds weighing a total of approximately 23.45 carats</li><li>Round brilliant cut diamond weighing 3.41 carats</li><li>Platinum</li><li>Total weight 54.43 grams</li><li>Interior circumference 16 inches, width ⅜ inch</li><li>Accompanied by GIA report no. 16408004, dated 4 June 2008, stating that the 3.41 carat diamond is H color and VS1 clarity with No Fluorescence</li></ul>

Platinum, 3.41ct Round Billiant Cut Diamond Convertible Drop and Diamond Necklace

Designed as a cross, set with 6 asscher cut diamonds.<ul><li>Diamonds weighing a total of 4.85 carats</li><li>Platinum</li><li>Total weight 7.20 grams</li><li>Pendant length 1 inch, chain length 16 inches</li><li>Accompanied by 6 GIA reports, stating that 6 asscher cut diamonds are D-E color and VVS1-VS1 clarity</li></ul>

Platinum and 4.54ctw Asscher Cut Diamond Cross Pendant Necklace

Of <a href="https://www.sothebys.com/en/buy/luxury/jewelry/diamond-jewelry" rel="noopener noreferrer" target="_blank">tennis</a> style, set with 165 round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 6.70 carat, on average 0.40 carat each</li><li>18 karat white gold</li><li>Total weight 22.94 grams</li><li>Length 16 inches</li></ul>

White Gold and 6.70ctw Round Brilliant Cut Diamond Tennis Necklace

Composed of round brilliant cut diamonds and accented by round cut <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emeralds</a>.<ul><li>Diamonds weighing a total of approximately 15.00 carats</li><li>Emeralds weighing a total of approximately 2.20 carats</li><li>Maker's mark for Hammerman Brothers</li><li>18 karat gold</li><li>Total weight 64.00 grams</li><li>Length 15 inches, width ⅜ inch</li><li>This item is final sale and not eligible for return</li></ul>

Gold, 13.00ctw Diamond and Emerald Collar Necklace

Composed of princess cut diamonds continuously set in a <a href="https://www.sothebys.com/en/buy/luxury/jewelry/diamond-jewelry" rel="noopener noreferrer" target="_blank">tennis</a> necklace.<ul><li>Diamonds weighing a total of approximately 18.95 carats, averaging 0.15 carat each</li><li>Platinum</li><li>Total weight 66.96 grams</li><li>Length 16½ inches, width ⅛ inch</li></ul>

Platinum and 18.95ctw Princess Cut Diamond Tennis Necklace

Composed of round brilliant cut diamonds on a sphere shaped pendant.<ul><li>Diamonds weighing a total of approximately 2.95 carats</li><li>18 karat white gold</li><li>Total weight 10.11 grams</li><li>Pendant diameter ¾ inches, chain length 15 - 16 inches</li></ul>

Diamond Necklaces

Diamond Necklaces

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Kieselstein-Cord

Van Cleef & Arpels

Bvlgari

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Van Cleef & Arpels

Bvlgari

Tiffany & Co.

Van Cleef & Arpels

Van Cleef & Arpels

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Cartier