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

Pendentif diamant 

Pendentif perle fine et diamants 

Collier pendentif perle fine, saphirs et diamants 

Collier perles fines et diamants

Composed of round shaped <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphires</a> alternating with round brilliant cut diamonds.<ul><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">Sapphires</a> weighing a total of approximately 6.05 carats</li><li>Diamonds weighing a total of approximately 3.90 carats</li><li>Platinum</li><li>Total weight 30.55 grams</li><li>Length 16 inches, width 3⁄32 inch</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum, 6.05ctw Sapphire and 3.90ctw Diamond Tennis Necklace

Composed of round brilliant cut diamonds in a three prong setting.<ul><li>Diamonds weighing a total of approximately 22.30 carats, on average 0.20 carat each</li><li>Platinum</li><li>Total weight 44.70 grams</li><li>Length 16 inches, width 5⁄32 inch</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum and 22.30ctw Round Brilliant Cut Diamond Tennis Necklace

Composed of emerald cut diamonds of graduated size.<ul><li>Emerald cut diamonds weighing a total of 35.43 carats, on average 0.32 carat each</li><li>Platinum</li><li>Total weight 62 grams</li><li>Length 16½ inches, width 9⁄32 inch</li><li>Accompanied by 111 GIA reports stating that the 0.30 - 1.00 carat diamonds are F-G color and VVS1-VS2 clarity</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum and 35.43ctw Emerald Cut Diamond Rivière Tennis Necklace

Composed of round brilliant cut diamonds in a three prong setting.<ul><li>Diamonds weighing a total of approximately 25.15 carats, on average 0.27 carat each</li><li>Platinum</li><li>Total weight 49.40 grams</li><li>Length 16 inches, width ¼ inch</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum and 25.15ctw Round Brilliant Cut Diamond Tennis Necklace

Oscar Heyman & Brothers 

Centering a pear shape Ceylon <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a>, accented by pear and round brilliant cut diamonds, suspended from a platinum chain.<ul><li>Ceylon <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a> weighing 4.30 carats</li><li>Diamonds weighing a total of approximately 0.40 carat</li><li>Maker's mark for Oscar Heyman &amp; Brothers with serial number</li><li>Platinum</li><li>Circa 2010s</li><li>Total weight 7.40 grams</li><li>Pendant length ⅞ inch, width 5⁄16 inch</li><li>Accompanied by a copy of C. Dunaigre report no. CDC 1501361 dated 2 February 2015 stating that the 4.30 carat <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a> is Sri Lanka (Ceylon) origin and shows indications of heating</li><li>Accompanied by a copy of an Oscar Heyman &amp; Brothers receipt</li><li>Accompanied by a signed box</li><li>This item is final sale and not eligible for return</li></ul>

Platinum, 4.30ct Ceylon Sapphire and Diamond Pendant Necklace

Set with an emerald cut diamond.<ul><li>Diamond weighing 3.01 carats</li><li>Platinum</li><li>Total weight 4.20 grams</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's box</li><li>Accompanied by GIA report no. 5182547607, dated 15 June 2026, stating that the 3.01 carat diamond is H color and VS2 clarity with no fluorescence</li></ul>

Platinum and 3.01ct Emerald Cut Diamond Pendant Necklace

Designed as a flower, composed of 5 pear cut Fancy Intense <a href="https://www.sothebys.com/en/buy/the-bridal-shop/engagement-rings/unique-solitaires/yellow-diamond" rel="noopener noreferrer" target="_blank">Yellow diamonds </a>as petal, centering with a round brilliant cut near colorless diamond.<ul><li>Fancy Intense <a href="https://www.sothebys.com/en/buy/the-bridal-shop/engagement-rings/unique-solitaires/yellow-diamond" rel="noopener noreferrer" target="_blank">Yellow diamonds </a>weighing a total of 2.80 carats</li><li>Near colorless diamond weighing 0.10 carat</li><li>18 karat yellow gold</li><li>Total weight 4.00 grams</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's box</li><li>Accompanied by 5 GIA reports, stating that 5 pear shape diamonds are natural Fancy Intense Yellow color and VS1-VS2 clarity</li></ul>

Gold, 2.80ctw Pear Shape Fancy Intense Yellow Diamond and Diamond Flower Pendant Necklace

Designed as a flower, composed of 5 pear cut near colorless diamonds as petal, centering with a round brilliant cut Fancy Intense Purplish Pink diamond.<ul><li>Near colorless diamonds weighing a total of 2.02 carats</li><li>Fancy Intense Purplish Pink diamond weighing 0.11 carat</li><li>Platinum and 18 karat rose gold</li><li>Total weight 6.10 grams</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's box</li><li>Accompanied by GIA report no.5232025362, dated 09 August 2023, stating that the 0.11 carat diamond is natural Fancy Intense Purplish Pink color</li><li>Accompanied by 5 GIA reports, stating that 5 pear shape diamonds are D-F color and VVS2-VS2 clarity</li></ul>

Platinum, Rose Gold, Fancy Intense Purplish Pink Diamond and Diamond Flower Pendant Necklace

Van Cleef & Arpels

Of the iconic Alhambra collection, composed of round brilliant cut diamonds interspaced by inlaid black onyx links.<ul><li>Diamonds weighing a total of approximately 4.80 carats</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>French hallmark and maker's mark</li><li>18 karat white gold</li><li>Total weight 57.58 grams</li><li>Length 36 inches, width 9⁄16 inch</li><li>Accompanied by a <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">VCA</a> certificate of authenticity</li><li>Accompanied by a signed folio, pouch, and cleaning kit</li><li>This item is final sale and not eligible for return</li></ul>

White Gold, Onyx and Diamond 20 Motif Vintage Alhambra Necklace

Tiffany & Co.

Of iconic Victoria collection, set with 3 marquise cut diamonds and 2 pear cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.88 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 rose gold</li><li>Total weight 2.14 grams</li><li>Length 16 inches; pendant length 7⁄16 inches</li><li>Accompanied by one Sotheby's box</li></ul>

Rose Gold and Diamond Victoria Mixed Cluster Pendant Necklace

Of Titan by Pharrell Williams collection, featuring stud motifs and set with round brilliant cut diamonds and a cultured pearl.<ul><li>Cultured pearl measure approximately 11.00 mm</li><li>Diamonds weighing a total of approximately 0.26 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>, with serial numbers</li><li>18 karat yellow gold</li><li>Total weight 18.23 grams</li><li>Adjustable length 20-22 inches, pendant length 1½ inches</li><li>Accompanied by a signed box</li></ul>

Gold, Cultured Pearl and Diamond Titan by Pharrell Williams Pendant Necklace

Set with 210 baguette cut diamonds.<ul><li>Diamonds weighing a total of approximately 33.60 carats, on average 0.16 carat each</li><li>18 karat white gold</li><li>Total weight 90.00 grams</li><li>Length 21 ¹³⁄₂₀&nbsp;inches</li><li>Accompanied by one Sotheby's folio</li><li>This item is final sale and not eligible for return</li></ul>

White Gold and 33.60ctw Baguette Cut Diamond Tennis Necklace

Alexandre Reza

Composed of a flexibale gold collar designed as overlapping leaves, accented by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 1.20 carats</li><li>Signed A-Reza with serial number</li><li>French hallmark and maker's mark</li><li>18 karat yellow gold</li><li>Total weight 68.43 grams</li><li>Length 16½ inches, width ⅜ inch</li><li>Accompanied by a signed box</li><li>This item is final sale and not eligible for return</li></ul>

Gold and Diamond Necklace 

Set with 81 cushion cut diamonds with yellow tint.<ul><li>Diamonds with yellow tint weighing a total of approximately 53.95 carats, on average 0.66 carat each</li><li>18 karat yellow gold</li><li>Total weight 47.68 grams</li><li>Length 15½ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Gold and 53.95ctw Cushion Cut Yellow Diamond Tennis Necklace

Featuring a heart shaped <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a>, accented by 2 round brilliant cut diamonds on the chain.<ul><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">Sapphire</a> weighing 4.13 carats</li><li>Diamonds weighing a total of approximately 0.10 carat</li><li>18 karat white gold</li><li>Total weight 6.00 grams</li><li>Length 17 inches</li><li>Accompanied by one Sotheby's pouch</li><li>Accompanied by GRS report no. 2025-098099, dated 3 September 2025, stating that the 4.13 carat sapphire is of Sri Lankan origin with Heat treatment</li></ul>

White Gold, 4.13ct Sapphire and Diamond Pendant Necklace

Set with 119 round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 16.25 carats, on average 0.13 carat each</li><li>18 karat yellow gold</li><li>Total weight 29.63 grams</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Gold and 16.25ctw Round Brilliant Cut Diamond Tennis Necklace

Designed as a line of oval cut diamonds spaced by round brilliant cut diamonds, the front suspending a fringe of pear cut diamonds.<ul><li>Diamonds weighing a total of approximately 28.10 carats</li><li>18 karat white gold</li><li>Total weight 30.06 grams </li><li>Length 17 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and 28.10ctw Diamond Necklace

Bvlgari

Of the Cerchi collection, designed as a graduated series of interlocking circular links set with round diamonds, suspending a drop composed of similarly set circular motifs.<ul><li>Diamonds weighing a total of approximately 20.00 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 68.50 grams</li><li>Length 16¾ inches, drop length 2 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and Diamond Cerchi Lariat Necklace 

Of a lariat necklace design featuring 4 stylized starburst motifs, set throughout with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 39.70 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/bvlgari" rel="noopener noreferrer" target="_blank">BVLAGRI</a></li><li>Inscribed 1.02cts, 1.01cts, 1.00cts and 1.00cts referring to the weights of the largest round diamonds on the reverse of the motifs</li><li>18 karat white gold</li><li>Total weight 101.00 grams</li><li>Adjustable length 14¾ inches to 17½ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and Diamond Lariat Necklace 

Of the iconic Victoria collection, set with round brilliant cut diamonds in graduated sizes and 4 marquise cut diamonds on the clasp.<ul><li>Diamonds weighing a total of approximately 10.38 carats</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>Platinum</li><li>Total weight 33.31 grams</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum and 10.38ctw Round Brilliant Cut Diamond Voctoria Rivière Tennis Necklace

Composed of round 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><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">Sapphires</a> weighing a total of approximately 22.00 carats</li><li>Diamonds weighing a total of approximately 10.00 carats</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>French maker's mark</li><li>18 karat yellow gold</li><li>Total weight 40.30 grams</li><li>Pendant length 2 inches, width ⅞ inch</li><li>Chain length 16½ - 18 inches</li><li>Accompanied by one Sotheby's box</li></ul>

Gold, Sapphire and Diamond Pendant Necklace

Of the Macao collection, composed of interlocking ropetwist links, each link accented with pavé set round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 1.75 carats</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">V.C.A</a>. with serial number</li><li>French hallmarks</li><li>18 karat yellow gold</li><li>Circa 1970s</li><li>Total weight 48.20 grams</li><li>Length 2⅞ inches, width 2 inches</li><li>Accompanied by one Sotheby's pouch</li></ul>

Vintage Gold and Diamond Pendant

Of the Allegra Collection, composed of cabochon and fancy cut citrine, topaz, pink tourmaline, garnet and peridot, accented by round brilliant cut diamonds.<ul><li>Peridot weighing approximately 0.87 carat</li><li>Garnets weighing a total of approximately 2.39 carats</li><li>Citrines weighing a total of approximately 1.91 carats</li><li>Topaz weighing approximately 0.92 carat</li><li>Diamonds weighing a total of approximately 0.27 carat</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 marks</li><li>18 karat white gold</li><li>Total weight 14.71 grams</li><li>Necklace length 15 inches to 17 inches; pendant length 2¼ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold, Mutligem and Diamond Allegra Lariat Necklace

Of the iconic Frivole collection, set with 3 round brilliant cut diamonds.<ul><li>Diamond weighing approximately 0.16 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 numbers</li><li>French assay mark</li><li>18 karat yellow gold</li><li>Total weight 9.42 grams</li><li>Length 14¾ inches to 16½ inches; pendant length ⅘ inch, width ⅞ inch</li><li>Accompanied by the Van Cleef &amp; Arpels certificate of authenticity and signed box</li></ul>

Gold and Diamond Frivole Large Pendant Necklace

Of the iconic HardWear collection, featuring a small link pendant, composed of yellow gold with pavé set round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.53 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 gold</li><li>Total weight 6.24 grams</li><li>Length 16 inches to 18 inches; pendant length 15⁄16 inch</li><li>Accompanied by a Tiffany signed box</li></ul>

Gold and Diamond HardWear Small Pendant Necklace

Of the iconic Two Butterfly collection, composed of round and marquise shaped diamonds, set with mother of pearls as wings.<ul><li>Diamonds weighing a total of approximately 0.20 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 6.42 grams</li><li>Length 14½ inches to 16¼ inches; pendant length 9⁄16 inch, pendant width ⅝ inch</li><li>Accompanied by Van Cleef &amp; Arpels certificate of authenticity and signed box</li></ul>

Rose Gold, Mother of Pearl and Diamond Two Butterfly Pendant Necklace 

Of the iconic Two Butterfly collection, composed of round and marquise shaped diamonds, accented by round cut pink sapphires.<ul><li>Diamonds weighing a total of approximately 0.20 carat</li><li>Pink sapphires weighing a total of approximately 0.88 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 5.95 grams</li><li>Length 14½ inches to 16¼ inches; pendant length 9⁄16 inch, pendant width ⅝ inch</li><li>Accompanied by Van Cleef &amp; Arpels certificate of authenticity</li></ul>

Rose Gold, Pink Sapphire and Diamond Two Butterfly Pendant Necklace

Of the iconic Two Butterfly collection, composed of round brilliant cut diamonds and centering a marquise cut diamond.<ul><li>Diamonds weighing a total of approximately 0.88 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>18 karat yellow gold</li><li>Total weight 5.51 grams</li><li>Adjustable length 14½ inches and 16¼ inches; pendant length ⅗ inch</li><li>Accompanied by a Van Cleef &amp; Arpels certificate of authenticity and box</li></ul>

Gold and Diamond Two Butterfly Pendant Necklace

Composed of 7 ancient coins set in round stations with round brilliant cut diamonds, spaced by curb links.<ul><li>Diamonds weighing a total of approximately 25.00 carats</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>Maker's marks</li><li>18 karat yellow gold</li><li>Total weight 321.40 grams</li><li>Necklace length 39 inches; station diameter 1¼ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Gold, 7 Ancient Coins and Diamond Monete Necklace

Cartier

Of the iconic Trinity collection, composed of polished tri-color gold circular links, centering a pavé set diamond interlocking ring drop.<ul><li>Diamonds weighing a total of approximately 4.50 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>18 karat yellow gold, rose gold and white gold</li><li>Total weight 83.30 grams</li><li>Necklace length 17½ inches; lariat length 3¾inches; pendant diameter 1¾ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Gold, White Gold, Rose Gold and Diamond Trinity Lariat Necklace

Asprey & Co. 

Composed of alternating circular cut <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emeralds</a> and curving pavé-set diamond ribbon links.<ul><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">Emeralds</a> weighing a total of approximately 6.20 carats</li><li>Diamonds weighing a total of approximately 3.90 carats</li><li>Signed A&amp;Co, LTD</li><li>Maker's mark and hallmarks</li><li>18 karat yellow gold</li><li>Circa 1980s</li><li>Total weight 60.90 grams</li><li>Length 15½ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Diamond Necklaces

Diamond Necklaces

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Oscar Heyman & Brothers

Van Cleef & Arpels

Tiffany & Co.

Tiffany & Co.

Alexandre Reza

Bvlgari

Bvlgari

Tiffany & Co.

Van Cleef & Arpels

Van Cleef & Arpels

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Tiffany & Co.

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Bvlgari

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Asprey & Co.