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

Unique gem set and diamond necklace/brooch combination, circa 1935

Composed of round brilliant-cut diamonds arranged as a flower.<ul><li>Diamonds weighing a total of approximately 0.50 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 3.01 grams</li><li>Length 16 inches</li></ul>

Gold and Diamond Fleurette Pendant Necklace

Composed of 126 oval cut Mozambique <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> and accented by round brilliant cut diamonds.<ul><li>Mozambique <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> weighing a total of 84.62 carats</li><li>Diamonds weighing a total of 19.85 carats</li><li>18 karat white and yellow gold</li><li>Total weight 155.75 grams</li><li>Interior circumference 17½ inches, width 1½ inches</li><li>Accompanied by GIA Quality Assurance report no. 2205960048, dated 18 March 2020, stating that 10 stones at random show No Evidence of Heat Treatment</li><li>Accompanied by C. Dunaigre report no. CDC 2205865/1-126, dated 31 May 2022, stating that the 84.62 carats of rubies are of Mozambique origin and show No Indications of Heating</li><li>Accompanied by Gubelin report no. 230422189, dated 24 May 2023, stating that the 84.62 carats of rubies are pink-red color and show No Indications of Heating</li></ul>

White Gold, Gold 84.62ctw Mozambique Ruby and Diamond Necklace

Of iconic Paloma Picasso Melody collection, featuring 2 interlocking rings connected by a bale with 3 small interlocking rings, set with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.40 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 9.72 grams</li><li>Length 18 inches</li><li>Accompanied by an original brand box</li></ul>

Rose Gold and Diamond Melody Pendant Necklace

Of a lariat design, composed of 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/tiffany-&amp;-co" rel="noopener noreferrer" target="_blank">Tiffany &amp; Co.</a></li><li>Platinum</li><li>Total weight 22.56 grams</li><li>Length 16 inches</li><li>Accompanied by original brand pouch, valuation report and receipt</li></ul>

Platinum and Diamond Circlet Lariat Necklace

Of iconic Victoria collection, set with 3 marquise cut diamonds and 2 pear cut diamonds.<ul><li>Diamonds are 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>Platinum 950</li><li>Total weight 4.20 grams</li><li>Length 16 inches</li><li>Accompanied by original brand box</li></ul>

Platinum and Diamond Large Mixed Cluster Victoria Pendant Necklace

Of iconic Frivole collection, set with 1 round brilliant cut diamond.<ul><li>Diamond weighing approximately 0.08 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>18 karat rose gold</li><li>Total weight 6.63 grams</li><li>Length 16 inches</li><li>Accompanied by an original brand box, certificate of authenticity and receipt</li></ul>

Rose Gold and Diamond Small Frivole Pendant Necklace

Of iconic Juste Un Clou collection, featuring a nail circle pendant, adorned with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.12 carat</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 rose gold</li><li>Total weight 5.49 grams</li><li>Length 16 inches</li><li>Accompanied by an original brand box and certificate of authenticity</li></ul>

Rose Gold and Diamond Juste Un Clou Pendant Necklace

Composed of round brilliant cut diamonds arranged as flowers.<ul><li>Diamonds weighing a total of approximately 6.00 carats</li><li>Platinum</li><li>Total weight 36.70 grams</li><li>Length 16¾ inches, width 5⁄16 inch</li></ul>

Platinum and Diamond Floral Collar Necklace

Set with an emerald cut diamond.<ul><li>Diamond weighing 1.01 carats</li><li>18 karat white gold</li><li>Length 17 inches, adjustable to 16 inches</li><li>Accompanied by GIA report no.2183141786, dated 26 January 2017, stating that the 1.01 carat diamond is D color and SI2 clarity</li></ul>

White Gold and 1.01ct Emerald Cut Diamond Pendant Necklace

Composed of baguette, round brilliant, and marquise diamonds, completed by a pear cut diamond drop.<ul><li>Pear cut diamond weighing approximately 1.00 carat</li><li>Additional diamonds weighing a total of approximately 16.00 carats</li><li>Platinum</li><li>Total weight 57.73 grams</li><li>Inner circumference 16½ inches, width 1½ inches</li></ul>

Platinum and Diamond Collar Necklace

Composed of four faceted rose quartz beads, accented by gold beads and end caps set with round brilliant cut diamonds, interspaced by areas of gold chains.<ul><li>Diamonds weighing a total of approximately 6.00 carats</li><li>Rose quartz beads measuring 13.00 - 13.50 mm</li><li>Signed <a href="https://www.sothebys.com/en/buy/luxury/jewelry/bvlgari" rel="noopener noreferrer" target="_blank">Bvlgari</a> with serial number</li><li>18 karat yellow gold</li><li>Total weight 59.13 grams</li><li>Length 16 inches, width ½ inch</li></ul>

Vintage Gold, Diamond and Rose Quartz Necklace

Composed of oval shaped pink <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>Pink <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 109.40 carats, on average 0.68 carat each</li><li>Diamonds weighing a total of approximately 14.45 carats</li><li>18 karat white gold</li><li>Total weight 141.74 grams</li><li>Inner circumference 17¾ inches, width 1⅜ inches</li><li>Accompanied by GIA Quality Assurance report no. 2203960067, dated 18 March 2020, stating that 10 purplish-pink sapphires tested at random showed no indications of heat</li></ul>

White Gold, 109.40ctw Pink Sapphire and Diamond Necklace

Set with a heart shaped diamond.<ul><li>Diamond weighing 3.18 carats</li><li>Platinum</li><li>Total weight 6.43 grams</li><li>Length 16 inches</li><li>Accompanied by GIA report no.7235306492, dated 23 August 2024, stating that the 3.18 carat diamond is H color and SI2 clarity</li></ul>

Platinum and 3.18ct Heart Shape Diamond Pendant Necklace

Of the iconic Diamonds By The Yard collection, composed of round brilliant cut diamonds interspaced on a chain.<ul><li>Diamonds weighing a total of approximately 1.20 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> Peretti</li><li>Platinum</li><li>Total weight 10.05 grams</li><li>Length 36 inches, width 3⁄16 inch</li><li>Accompanied by a signed folio and box</li><li>This item is final sale and not eligible for return</li></ul>

Platinum and Diamonds by the Yard Sprinkle Necklace

Centering a cushion cut Fancy Light <a href="https://www.sothebys.com/en/buy/the-bridal-shop/engagement-rings/unique-solitaires/yellow-diamond" rel="noopener noreferrer" target="_blank">Yellow diamond</a>, surrounded by round brilliant cut near colorless diamonds.<ul><li>Fancy Light Yellow diamond weighing 2.01 carats</li><li>Near colorless diamonds weighing a total of approximately 0.20 carat</li><li>18 karat white gold and yellow gold</li><li>Total weight 5.80 grams</li><li>Length 16 inches</li><li>Accompanied by GIA report no.2225200443, dated 11 January 2022, stating that the 2.01 carat natural diamond is Fancy Light Yellow color and VVS1 clarity</li></ul>

White Gold, Gold, 2.01ct Cushion Cut Fancy Light Yellow Diamond and Diamond Pendant Necklace

Composed of round brilliant cut diamonds set in a threeprong setting.<ul><li>Diamonds weighing a total of approximately 11.50 carats, on average 0.08 carat each</li><li>18 karat white gold</li><li>Total weight 20.00 grams</li><li>Length 16 inches, width ⅛ inch</li></ul>

White Gold and 11.50ctw Round Brilliant Cut Diamond Tennis Necklace

Centering a pear shaped Colombian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emerald</a>, accented by pear, marquise, and round brilliant cut diamonds.<ul><li>Colombian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emerald</a> weighing 26.03 carats</li><li>Diamonds weighing a total of 6.99 carats</li><li>Maker's mark for Jacques Timey</li><li>Platinum</li><li>Circa 1970s</li><li>Total weight 18.50 grams</li><li>Length 2 inches, width ⅞ inch</li><li>Accompanied by Harry Winston Insurance Valuation paperwork dated July 27, 1973 and July 12, 1985</li><li>Accompanied by GRS report no. GRS2024-036678, dated 21 march 2024, stating that the 26.03 carat emerald is Colombian origin and shows Minor clarity enhancement</li></ul>

Vintage Platinum and 26.03ct Colombian Emerald and Diamond Convertible Brooch Pendant

Composed of single cut diamonds set in white gold curb link chain, interspaced by yellow gold links with a high polish finish.<ul><li>Diamonds weighing a total of approximately 1.90 carats</li><li>Signed Pomellato</li><li>Italian registry mark</li><li>18 karat yellow and white gold</li><li>Circa 1970s</li><li>Total weight 51.29 grams</li><li>Necklace length 14½ inches, width ¼ inch; Bracelet length 7¼ inches </li></ul>

Vintage White Gold, Gold and Diamond Link Convertible Bracelet Set and Necklace

Designed as a working zipper, set with round diamonds, round and square-cut pink tourmalines and lapis lazuli beads, the tassel further adorned by cultured pearls and pink tourmaline beads.<ul><li>Diamonds weighing a total of approximately 6.35 carats</li><li>Signed Van Cleef &amp; Arpels, with serial numbers</li><li>French assay and maker's mark, Swiss hallmarks</li><li>18 karat white gold</li><li>Internal circumference 19 inches, detachable for wear as a 7 inch bracelet; tassel length 2¾ inches</li><li>Accompanied by a Van Cleef &amp; Arpels certificate of authenticity, gouache rendering, a signed box and pouch</li></ul>

White Gold, Pink Tourmaline, Lapis Lazuli, Cultured Pearls and Diamond Zip Couture Necklace

Of Cosmos collection, set with round brilliant cut diamonds.<ul><li>Diamonds on the pendant weighing a total of 1.89 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 numbers</li><li>18 karat white gold</li><li>Necklace length 17 inches, pendant length 13⁄16 inch</li><li>Accompanied by a copy of product information letter from Van Cleef &amp; Arpels</li></ul>

White Gold and Diamond Cosmos Pendant Necklace

Of iconic Panthère design hanging from a black cord, set with 2 pear-shaped emerald eyes, onyx nose, cone-shaped onyx and round diamonds on collar, additional round diamonds on tassels.<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>Stamped 750</li><li>Hallmark</li><li>18 karat white gold</li><li>Adjustable cord length 26 inches, pendant length 3 inches </li></ul>

White Gold, Onyx, Diamond and Emerald Panthère Tassel Pendant Necklace

Suspending a pear-shaped Fancy Deep Brownish Yellow diamond weighing 303.10 carats, set on a necklace. Accompanied by GIA report no. 2173621573 dated November 24, 2021 stating that the diamond is Fancy Deep Brownish Yellow color, Internally Flawless clarity. Together with a letter from the GIA dated September 28, 2022 stating that the diamond is the largest Flawless or Internally Flawless, and largest pear-shaped diamond graded by the laboratory to date. Together with a GIA Monograph attesting to the rarity and importance of the stone. Accompanied by the Smithsonian magazine from May 1988, featuring an article on the diamond.&nbsp;

The Golden Canary Diamond

Composed of yellow gold with a textured finish and accented by white gold of a high polish mirrow finish, enhanced by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 2.25 carats</li><li>Signed Chaumet Paris</li><li>French hallmarks</li><li>18 karat yellow and white gold</li><li>Circa 1970s</li><li>Total weight 140.22 grams</li><li>Necklace circumference 14 inches, drop length 4 inches, width 2 inches</li><li>Earring diameter 1⅜ inches</li></ul>

Vintage White Gold, Gold, and Diamond High Polish Convertible Necklace and Earclips Set

Suspending a pear-shaped Fancy Deep Brown-Orange diamond weighing 100.26 carats, set on a necklace featuring marquise-, pear-shaped and round diamonds weighing a total of 98.19 carats, necklace signed Cartier. Accompanied by GIA report no. 6224913288 dated April 25, 2023 stating that the diamond is Fancy Deep Brown-Orange, Natural color, I1 clarity. Accompanied by

The 100.26 Carat Fancy Deep Brown-Orange Diamond

Composed of a triangle shaped pink tourmaline, accented by round brilliant cut diamonds, suspended from a chain.<ul><li>Pink tourmaline weighing approximately 10.30 carats</li><li>Diamonds weighing a total of approximately 0.65 carat</li><li>18 karat white gold</li><li>Total weight 10.24 grams</li><li>Chain length 16 inches; pendant length 1⅛ inches</li></ul>

White Gold, 10.30ct Pink Tourmaline and Diamond Pendant Necklace

Composed of pear-shaped Zambian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emeralds</a> and accented by round, pear and marquise-cut diamonds.<ul><li>Zambian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emeralds</a> weighing a total of 59.28 carats</li><li>Diamonds weighing a total of 34.79 carats</li><li>Platinum, 18 karat white and yellow gold</li><li>Total weight 96.40 grams</li><li>Earrings fitted with posts</li><li>Necklace length 16½ inches; necklace drop length 3 inches</li><li>Earring length 3 inches, width 1 inch</li><li>Accompanied by C. Dunaigre report no. CDC 1808585/1-22, dated 18 August 2018, stating that the 34.35 carats of emeralds are of of Zambian origin and show indications of minor to moderate clarity enhancement</li><li>Accompanied by C. Dunaigre report no. CDC 1908507/1-20, dated 16 August 2019, stating that the 24.93 carats of emeralds are of Zambian origin and show indications of minor clarity enhancement to indications of clarity enhancement</li></ul>

Platinum, Gold, 59.28ctw Zambian Emerald and Diamond Earring and Necklace Set

Composed of pear and oval Zambian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emeralds</a>, accented by round brilliant, pear and marquise-shaped diamonds.<ul><li>Zambian <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 144.07 carats</li><li>Diamonds weighing a total of approximately 171.40 carats</li><li>Platinum</li><li>Total weight 321.20 grams</li><li>Length 17½ inches, width 3¾ inches</li><li>Accompanied by C. Dunaigre report no. CDC 1908510/1-29, dated 16 August 2019, stating that the 144.07 carats of emeralds are of Zambian origin and show indications of minor clarity enhancement to indications of enhancement</li></ul>

Platinum, 144.07ctw Zambian Emerald and Diamond Necklace

Alternating set with 24 oval cut diamonds and 27 pear shaped diamonds.<ul><li>Oval cut diamonds weighing a total of approximately 7.40 carats</li><li>Pear shaped diamonds weighing a total of approximately 6.50 carats</li><li>18 karat white gold</li><li>Total weight 17.53 grams</li><li>Length 17 inches</li></ul>

White Gold and 13.90ctw Fancy Cut Diamond Necklace

Set with 24 heart shaped diamonds, 16 pear shaped diamonds, 12 oval cut diamonds and 14 round brilliant cut diamonds.<ul><li>Heart shaped diamonds weighing a total of approximately 5.15 carats</li><li>Pear shaped diamonds weighing a total of approximately 4.05 carats</li><li>Oval cut diamonds weighing a total of approximately 3.25 carats</li><li>Round brilliant cut diamonds weighing a total of approximately 2.80 carats</li><li>18 karat white gold</li><li>Total weight 21.84 grams</li><li>Length 16½ inches</li></ul>

White Gold and 15.25ctw Fancy Cut Diamond Necklace

Alternating set with 127 heart shaped diamonds in 2 sizes.<ul><li>Diamonds weighing a total of approximately 12.20 carats</li><li>18 karat white gold</li><li>Total weight 18.93 grams</li><li>Length 16¼</li></ul>

White Gold and 12.20ctw Heart Shape Diamond Necklace

Of a <a href="https://www.sothebys.com/en/buy/luxury/jewelry/diamond-jewelry" rel="noopener noreferrer" target="_blank">tennis</a> necklace, set with 132 radiant cut diamonds.<ul><li>Diamonds weighing a total of approximately 19.75 carats</li><li>18 karat white gold</li><li>Total weight 23.86 grams</li><li>Length 16 inches</li></ul>

White Gold and 19.75ctw Radiant Cut Diamond Tennis Necklace

Composed of round brilliant cut diamonds on billowing gold links with a high polish finish.<ul><li>Diamonds weighing a total of approximately 3.75 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>Circa 1992</li><li>18 karat yellow gold</li><li>Total weight 142.37 grams</li><li>Length 16 inches, width ⅞ inch</li></ul>

Vintage Gold and Diamond Collar Necklace

Of a layered design, featuring multiple flower-shaped diamond clusters, each set with either 5 pear cut or 5 oval cut diamonds with a round brilliant-cut diamond in the center, accented by scattered round brilliant cut diamonds. <ul><li>Pear cut diamonds weighing a total of approximately 45.50 carats</li><li>Oval cut diamonds weighing a total of approximately 17.00 carats</li><li>25 GIA certified round brilliant cut diamonds weighing a total of 15.75 carats</li><li>Round brilliant cut diamonds weighing a total of approximately 13.97 carats</li><li>18 karat white gold</li><li>Total weight 47.50 grams</li><li>Length 17 inches, wides part 1½ inches</li><li>Accompanied by 25 GIA reports, stating that 25 round brilliant cut diamonds are E-H color and VVS2-SI1 clarity</li></ul>

White Gold and Diamond Floral Necklace

Composed of kite shaped blue, pink and yellow <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphires</a> arranged as stars, accented by round brilliant cut diamonds.<ul><li>Multicolor <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 4.80 carats</li><li>Diamonds weighing a total of approximately 0.15 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>Platinum</li><li>Total weight 17.37 grams</li><li>Length 15 inches; Drop length 2¾ inches, width ¾ inch</li><li>Accompanied by a signed folio</li><li>This item is final sale and not eligible for return</li></ul>

Platinum, Multicolor Sapphire, and Diamond Star Lariat Necklace

Of the Le Baiser Du Dragon collection, composed of carved black onyx, accented by <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">ruby</a> beads and cabochons, enhanced by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 2.00 carats</li><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">Ruby</a> beads measuring 5.00 mm</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 white gold</li><li>Total weight 24.70 grams</li><li>Necklace length 17½ inches; Pendant length 2½ inches, width 1⅜ inches</li><li>Accomapnied by a signed pouch</li><li>This item is final sale and not eligible for return</li></ul>

Diamond Necklaces

Diamond Necklaces

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