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

Tiffany & Co.

Diamond 'Victoria' Necklace

Buccellati

Gold and Diamond Suite of Jewels

Diamond and Demantoid Garnet Pendant-Necklace

Diamond Necklace

David Webb

Nephrite, Amethyst, Ruby, and Diamond 'Demon Mask' Necklace-Brooch Combination

Gold and Diamond 'Tiffany Knot' Necklace and Bangle Bracelet

Gold and Diamond Pendant-Necklace

Of a scallop design, composed of bezel set round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 5.00 carats</li><li>18 karat white gold</li><li>Total weight 30.33 grams</li><li>Inner circumference 16 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and 5.00ctw Round Brilliant Cut Diamond Scalloped Tennis Necklace

Centering with a Colombian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">emerald</a>, completed with baguette cut diamonds and round brilliant cut diamonds halfway along the necklace.<ul><li>Colombian <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/emerald" rel="noopener noreferrer" target="_blank">Emerald</a> weighing 2.25 carats</li><li>Baguette cut diamonds weighing a total of approximately 8.95 carats</li><li>Round brilliant cut diamonds weighing a total of approximately 8.20 carats</li><li>18 karat white gold</li><li>Total weight 46.48 grams</li><li>Length 17 inches</li><li>Accompanied by one Sotheby's folio</li><li>Accompanied by CDC report no. 2201340, dated 11 January 2022, stating that the 2.25 carat natural emerald originates from Colombia, exhibiting vivid green color (typically found in emeralds from the "Muzo" mining district) with indications of minor clarity enhancement</li></ul>

White Gold, 2.25ct Colombian Emerald and Diamond Necklace

Of&nbsp;<a href="https://www.sothebys.com/en/buy/luxury/jewelry/diamond-jewelry" rel="noopener noreferrer" target="_blank">tennis</a>&nbsp;necklace style, set with 140 round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 11.70 carats, on average 0.08 carat each</li><li>18 karat white gold</li><li>Total weight 21.05 grams</li><li>Length 16½ inches</li><li>Accompanied by one Sotheby's pouch</li></ul>

White Gold and 11.70ctw Round Brilliant Cut Diamond Tennis Necklace

Composed of alternating emerald cut and round brilliant cut diamonds, highlighted at the front by a series of articulated spike-form drops set with princess cut diamonds. <ul><li>Emerald cut diamonds weighing a total of approximately 11.05 carats</li><li>Round brilliant cut diamonds weighing a total of approximately 4.80 carats</li><li>Princess cut diamonds weighing a total of approximately 4.35 carats</li><li>18 karat white gold</li><li>Total weight 30.61 grams</li><li>Length 17 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and Diamond Necklace

Van Cleef & Arpels

Of the 'Lotus' collection, designed as a lotus flower pavé set with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 6.81 carats</li><li>18 karat white gold</li><li>Chain length 35 ²⁄₅ inches</li><li>Brooch 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 and maker's mark</li><li>French assay and maker’s marks</li><li>Total weight 36.0 grams</li><li>Accompanied by a copy of service paperwork from Van Cleef &amp; Arpels</li><li>This item is final sale and not eligible for return</li><li>Accompanied by one Sotheby's box</li></ul>

White Gold and Diamond Lotus Convertible Pendant Necklace

Composed of an oval shaped bluish green aquamarine, accented by round brilliant cut diamonds.<ul><li>Aquamarine weighing 4.83 carats</li><li>Diamonds weighing a total of approximately 0.20 carat</li><li>Platinum</li><li>Stamped with carat weight</li><li>Total weight 6.89 grams</li><li>Pendant length 9⁄16 inch, width 7⁄16 inch; Chain length 18½ inches</li><li>Accompanied by one Sotheby's box</li><li>Accompanied by AGL report no. 1145766, dated 11 February 2025, stating that the 4.83 carat Aquamarine is Bluish Green color and shows No Gemological Evidence of Heat</li></ul>

Platinum, 4.83ct Aquamarine and Diamond Pendant Necklace

FOPE

<ul><li>Comprenant un collier et un bracelet souples à maillons géométriques, réhaussés de diamants taille brillant</li><li>&nbsp;Longueurs environ 441 mm et 220 mm</li><li>Signés FOPE, gravés 750, ITALY</li><li>Poinçon français d'import pour l'or 18K (750°/00), poinçons italiens et poinçon de maître pour Fope.</li><li>Poids brut total 84.50 g</li></ul> <ul><li>Comprising a flexible necklace and bracelet of fancy-link design, enhanced with brilliant-cut diamonds</li><li>Lengths approximately 441mm and 220 mm</li><li>Signed FOPE, engraved 750, ITALY</li><li>French import mark for 18 carat gold, Italian marks and maker's mark for Fope</li><li>Combined gross weight 84.50 grams</li></ul>

Demi-parure or et diamants | Gold and diamond demi-parure

Composed of a cushion shaped madagascar <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a> on a detachable pendant, accented by pear and round brilliant cut diamonds.<ul><li>Madagascar<a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank"> sapphire</a> weighing 36.20 carats</li><li>Diamonds weighing a total of approximately 67.30 carats</li><li>Platinum</li><li>Total weight 92.32 grams</li><li>Length 16 inches, width 2 inches</li><li>Accompanied by C. Dunaigre report no 22011302, dated 27 January 2022, stating that the 36.20 carat <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphire</a> is Madagascar origin and shows Indications of Heating</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum, 36.20ct Madagascar Sapphire and Diamond Convertible Collar Necklace

Composed of a pear shaped Paraiba-Type Tourmaline, accented by round brilliant cut diamonds, suspended from a chain.<ul><li>Paraiba-Type Tourmaline weighing 1.91 carats</li><li>Diamonds weighing a total of approximately 0.50 carat</li><li>18 karat white gold</li><li>Total weight 5.12 grams</li><li>Pendant lenth ¾ inch, width ½ inch; Chain length adjustable 18-16 inches</li><li>Accompanied by GRS report no. GRS2023-079690, dated 19 July 2023, stating that the 1.91 carat Tourmaline is Greenish-Blue "Paraiba" color, of Mozambique origin and is Heated</li><li>Accompanined by one Sotheby's box</li></ul>

White Gold, 1.91ct Paraiba-Type Tourmaline and Diamond Pendant Necklace

Centering a pear shaped rubellite tourmaline, accented by round brilliant cut diamonds, suspended from a white gold chain.<ul><li>Rubellite tourmaline weighing approximately 5.55 carats</li><li>Diamonds weighing a total of approximately 0.40 carat</li><li>18 karat white gold</li><li>Total weight 9.50 grams</li><li>Chain length 21 inches, Pendant length 1⅛ inches, width ½ inch</li><li>Accompanied by one Sotheby's box</li></ul>

White Gold, 5.55ct Rubellite Tourmaline and Diamond Pendant Necklace

Centering an oval shaped <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">ruby</a> and accented by round brilliant cut diamonds.<ul><li><a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">Ruby</a> weighing approximately 1.35 carats</li><li>Diamonds weighing a total of approximately 0.15 carat</li><li>18 karat white gold</li><li>Total weight 3.36 grams</li><li>Pendant length ⅝ inch, width ⅜ inch</li><li>Accompanied by one Sotheby's box</li></ul>

White Gold, 1.35ct Ruby and Diamond Pendant Necklace

Of classic Victoria collection, composed of 3 iconic motifs in graduate size and 1 marquise cut diamond at the bottom, each motif set with 4 marquise cut diamonds.<ul><li>Diamonds weighing a total of approximately 2.10 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 6.52 grams</li><li>Length 16 inches</li><li>Accompanied by original brand box</li></ul>

Platinum and Diamond Victoria Pendant Necklace

Bvlgari

Of iconic Monete collection, featuring an ancient bronze coin set in white gold and gold bezel engraved "IMPERO ROMANO- COSTANZO II-337-361 d.C.", connected by a curb link chain, accented by 4 baguette cut diamonds at the chain termini and 1 round diamond on the clasp.<ul><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 yellow gold and white gold</li><li>Circa 1980s</li><li>Total weight 87.10 grams</li><li>Length 15⅓ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Vintage Gold, White Gold and Ancient Coin Monete Necklace

Of iconic Tubogas collection, featuring Doppio Cuore motif at the center, pavé set with round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 1.00 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 yellow gold</li><li>Total weight 177.70 grams</li><li>Length 14½ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Gold and Diamond Tubogas Necklace

Of classic Diamonds by Yard collection, composed of round brilliant cut diamonds interspaced on a chain.<ul><li>Diamonds weighing a total of approximately 2.50 carats</li><li>Signed <a href=" Accompanied by one Sotheby's folio" rel="noopener noreferrer" target="_blank">Tiffany &amp; Co.</a></li><li>18 karat yellow gold</li><li>Total weight 4.20 grams</li><li>Length 17 inches</li><li>&nbsp;Accompanied by one Sotheby's folio</li></ul>

Gold and Diamonds By The Yard Necklace

Composed of 87 pear cut diamonds of graduated size.<ul><li>Diamonds weighing a total of approximately 27.10 carats, center diamond weighing 0.90 carat</li><li>18 karat white gold</li><li>Total weight 26.46 grams</li><li>Length 17 inches, width ⅜ inch</li><li>Accompanied by 9 GIA reports stating that the diamonds are 0.90 - 0.50 carat, G-H color and VVS1-VS2 clarity with No Fluorescence</li><li>Accompanied by one Sotheby's folio</li></ul>

White Gold and 27.10ctw Pear Cut Diamond Collar Necklace

Centering a pear shaped morganite, accented by round brilliant cut diamonds.<ul><li>Morganite weighing 14.91 carats</li><li>Diamonds weighing a total of approximately 0.50 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 8.96 grams</li><li>Pendant length 1¼ inches, width ⅝ inch</li><li>Accompanied by a signed box</li><li>Accompanied by a copy of <a href="https://www.sothebys.com/en/buy/luxury/jewelry/tiffany-&amp;-co" rel="noopener noreferrer" target="_blank">Tiffany &amp; Co.</a> valuation paperwork</li><li>This item is final sale and not eligible for return</li></ul>

Rose Gold, 14.91ct Morganite and Diamond Soleste Pendant Necklace

Designed as a graduated series of overlapping foliate motifs, pavé set throughout with round transitional cut, Swiss cut, single cut and brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 62.00 carats</li><li>Signed&nbsp;<a href="https://www.sothebys.com/en/buy/luxury/jewelry/van-cleef-&amp;-arpels" rel="noopener noreferrer" target="_blank">Van Cleef &amp; Arpels</a></li><li>French assay marks</li><li>18 karat yellow gold</li><li>Circa 1962</li><li>Total weight 88.16 grams</li><li>Inner circumference 14 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Vintage Gold and Diamond Leaf Necklace

Set with 5 pear cut diamonds.<ul><li>Diamonds weighing a total of 2.50 carats</li><li>Platinum</li><li>Total weight 6.20 grams</li><li>Pendant length ¾ inch, chain length 16 inches</li><li>&nbsp;Accompanied by one Sotheby's box</li><li>Accompanied by GIA report no. 6462047750, dated 15 Mar 2023, stating that the 0.50 carat diamond is D color and SI2 clarity with None fluorescence</li><li>Accompanied by GIA report no. 2456971563, dated 6 Mar 2023, stating that the 0.50 carat diamond is D color and SI2 clarity with None fluorescence</li><li>Accompanied by GIA report no. 7458909658, dated 27 Feb 2023, stating that the 0.50 carat diamond is E color and SI1 clarity with None fluorescence</li><li>Accompanied by GIA report no. 6461107082, dated 23 Mar 2023, stating that the 0.50 carat diamond is E color and SI2 clarity with None fluorescence</li><li>Accompanied by GIA report no. 2454666918, dated 25 Jan 2023, stating that the 0.50 carat diamond is D color and SI2 clarity with None fluorescence</li></ul>

Platinum and 2.50ctw Diamond Cluster Pendant Necklace

Of curb link sautoir design, spaced with Toi et Moi stations each set with 2 cabochon citrines, framed by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 18.00 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 marks</li><li>18 karat yellow gold</li><li>Total weight 222.60 grams</li><li>Length 34 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Vintage Gold, Citrine and Diamond Toi et Moi Sautoir Necklace 

Featuring a bezel set cameo engraved 'BVLGARI ADRIANO IMP XVIII Sec' on the back, adorned by round brilliant cut diamonds and baguette cut diamonds, connected with gold curb link.<ul><li>Cameo measures approximately 1 1⁄8 x 1 3⁄8 inches</li><li>Diamonds weighing a total of approximately 5.00 carats</li><li>Signed <a href="about:blank" rel="noopener noreferrer" target="_blank">BVLGARI</a></li><li>Italian registry marks</li><li>18 karat yellow gold</li><li>Total weight 105.40 grams</li><li>Necklace length 16¼; pendant length 1⅝ inches, width 1⅛ inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Vintage Gold, Cameo and Diamond Necklace

Of graduating, spiral design composed of links with a high polish finish and accented by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 1.05 carats</li><li><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 52.37 grams</li><li>Length 14½ inches, width ¼ inch</li><li>Accompanied by a signed pouch</li></ul>

Vintage Gold and Diamond Necklace

Featuring a heart shape Fancy <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> in the center, set with heart shaped near colorless diamonds.<ul><li>Fancy <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> weighing 3.82 carats</li><li>Near colorless diamonds weighing a total of approximately 12.90 carats</li><li>18 karat white gold and yellow gold</li><li>Total weight 32.18 grams</li><li>Length 17 inches</li><li>Accompanied by one Sotheby's folio</li><li>Accompanied by GIA report no. 6195156283, dated 11 March 2025, stating that the 3.82 carat diamond is natural Fancy Yellow color and SI1 clarity with Medium Blue fluorescence</li></ul>

White Gold, Gold, 3.82ct Heart Shape Fancy Yellow Diamond and Diamond Necklace

Featuring 17 square emerald cut <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/sapphire" rel="noopener noreferrer" target="_blank">sapphires</a> in graduated sizes, each spacing with 3 baguette cut diamonds, continued with baguette 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 22.40 carats</li><li>Diamonds weighing a total of approximately 39.00 carats</li><li>18 karat white gold</li><li>Total weight 58.10 grams</li><li>Length 17 inches</li><li>Accompanied by one Sotheby's pouch</li></ul>

White Gold, 22.40ct Sapphire and 39.00ct Diamond Necklace

Composed of oval shaped Burmese <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>Burmese <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> weighing a total of approximately 79.85 carats</li><li>Diamonds weighing a total of approximately 21.18 carats</li><li>Platinum and 18 karat yellow gold</li><li>Total weight 98.91 grams</li><li>Length 15¾ inches, width 2¼ inches</li><li>Accompanied by C. Dunaigre report no. CDC 2205694/1-53, dated 31 May 2022, stating that the 79.85 carats of <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> are of Burma (Myanmar) origin and show Indications of Heating</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum, Gold, 79.85ctw Burmese Ruby and Diamond Necklace

Composed of oval shaped Burmese and Madagascar <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a>, accented by marquise, pear and round brilliant cut diamonds.<ul><li>Burmese and Madagascar <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> weighing a total of approximately 26.55 carats</li><li>Diamonds weighing a total of approximately 16.55 carats</li><li>18 karat white gold</li><li>Total weight 54.43 grams</li><li>Length 16½ inches, width ⅝ inch</li><li>Accompanied by AGL report no. CS 1079643, dated 17 November 2016, stating that the 26.55 carats of <a href="https://www.sothebys.com/en/buy/luxury/jewelry/fine-jewelry/ruby" rel="noopener noreferrer" target="_blank">rubies</a> are of Madagascar and Burma (Myanmar-Mong Hsu) origin and show evidence of Heat Treatment with Minor Clarity Enhancement</li><li>Accompanied by one Sotheby's folio</li></ul>

Platinum, 26.55ctw Burmese and Madagascar Ruby and Diamond Necklace

Cartier

Of the iconic Juste Un Clou, designed as a nail in circle, accented by round brilliant cut diamonds.<ul><li>Diamonds weighing a total of approximately 0.10 carat</li><li>Signed&nbsp;<a href="https://admin.prod.sothelabs.com/marketplace/product/Accompanied%20by%20one%20Sotheby's%20pouch" rel="noopener noreferrer" target="_blank">Cartier</a>, with serial numbers</li><li>18 karat yellow gold</li><li>Total weight 6.14 grams</li><li>Length 16 inches</li><li>Accompanied by original certificate of authenticity and brand pouch</li></ul>

Gold and Diamond Juste Un Clou Necklace

Composed of a pear cut pink tourmaline and accented by round brilliant cut diamonds.<ul><li>Pink tourmaline weighing approximately 16.25 carats</li><li>Diamonds weighing a total of approximately 0.75 carat</li><li>18 karat yellow gold</li><li>Total weight 12.89 grams</li><li>Pendant length 1⅜ inches, width ¾ inch; Chain length 20 inches</li><li>Accompanied by one Sotheby's box</li></ul>

Gold, 16.25ct Tourmaline and Diamond Pendant Necklace

Of Maryline collection, set with 12 rows of lapis lazuli beads, 12 triangular lapis lazuli and round brilliant cut diamonds on the clasp.<ul><li>Lapis lazuli beads measure approximately 3.00 mm</li><li>Diamonds weighing a total of approximately 2.00 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 numbers</li><li>Stamped 750, french hallmark and maker's mark</li><li>18 karat yellow gold</li><li>Total weight 85.2 gram</li><li>Length 16 inches</li><li>Accompanied by one Sotheby's folio</li></ul>

Diamond Necklaces

Diamond Necklaces

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Tiffany & Co.

Buccellati

David Webb

Tiffany & Co.

Tiffany & Co.

Van Cleef & Arpels

FOPE

Tiffany & Co.

Bvlgari

Bvlgari

Tiffany & Co.

Tiffany & Co.

Van Cleef & Arpels

Bvlgari

Bvlgari

Tiffany & Co.

Cartier

Van Cleef & Arpels