The Marie-Thérèse Pink Diamond, A Historic Jar Colored Diamond Ring, (Estimate $3,000,000 - 5,000,000). © Christie's Images Ltd 2025.

NEW YORK, NY.- Christie’s presents Magnificent Jewels, a live auction taking place on 17 June at Rockefeller Center in New York City. The sale will showcase an outstanding selection of captivating diamonds and spectacular-colored gemstones, alongside iconic creations from the world’s most prestigious jewelry houses, including Belperron, Bulgari, Cartier, Harry Winston, JAR, Van Cleef & Arpels, and many others.

Leading the sale is The Blue Belle, a superb sapphire and diamond necklace (Estimate $8,000,000 – 12,000,000). At its heart is an extraordinary 392.52 carat Sri Lankan (Ratnapura) sapphire discovered in 1926. Acquired in 1937 with the intention of being presented to Queen Elizabeth (later The Queen Mother) on the occasion of King George VI’s coronation, the jewel ultimately never entered the royal collection. After passing through several distinguished owners, the Blue Belle reemerged at auction in Geneva in 2014 and now returns to Christie’s, where it will once again take center stage as the star lot of the auction.

Rahul Kadakia, Christie’s International Head of Jewelry, comments: “Christie’s is pleased to present the full selection of Magnificent Jewels to our clients and collectors. Leading the sale is the Blue Belle Sapphire—a 392.52-carat gem of exceptional size, color, and clarity. Sapphires of this caliber are extraordinarily rare. This remarkable stone must be considered among the most prestigious colored gemstones to appear on the market in many years—truly worthy of any world-class collection.”

Lot 140. The Blue Belle, a superb sapphire and diamond necklace (Estimate $8,000,000 – 12,000,000). © Christie's Images Ltd 2025.

Cushion modified mixed-cut sapphire of 392.52 carats, round and oval-shaped diamonds, 18k white gold
AGL, 2025, report no. 1147856: 392.52 carats, Classic Ceylon, no gemological evidence of heat, clarity enhancement: none
Gübelin, 2014, report no. 1490018: 392.52 carats, Ceylon, no indications of heating, Appendix letter
SSEF, 2014, report no. 72359: 392.52 carats, Ceylon, no indications of heating
Size/Dimensions: 44.4 cm (17 ½ in)
Gross Weight: 234.5 grams

Among the most historically significant highlights of the sale is The Marie-Thérèse Pink Diamond, A Historic Jar Colored Diamond Ring, (Estimate $3,000,000 - 5,000,000). This rare 10.38-carat kite-shaped fancy purple-pink diamond is believed to date to the mid-18th century. According to royal lore, Queen Marie Antoinette entrusted her most treasured jewels to her faithful coiffeur on the eve of her failed escape from Paris in 1791, hoping to one day reclaim them. Though fate intervened, the jewels were eventually passed down to her only surviving child, Duchess Marie Thérèse de Angoulême, and later to her niece, Duchess Marie Thérèse de Chambord. Though not known for certain, it is likely that this diamond was part of this inheritance.

Generations later, a will identified the diamond’s next known owner: Queen Marie Theresa of Bavaria, who referred to it as “a pink solitaire diamond from Aunt Chambord.” Presented in a velvet case containing a hat pin bearing the Austrian Imperial Warrant—likely dating to 1868—the diamond’s provenance reflects its imperial legacy. The jewel last surfaced at auction in Geneva in 1996, was offered by a member of a European royal family and has remained out of public view until now. Today, it has been reimagined by the legendary Parisian jeweler Joel Arthur Rosenthal (JAR) and set into a spectacular ring that transforms it into a contemporary masterpiece, imbued with centuries of royal history, elegance, and intrigue.

Lot 44. The Marie-Thérèse Pink Diamond, A Historic Jar Colored Diamond Ring, (Estimate $3,000,000 - 5,000,000). © Christie's Images Ltd 2025.

The Marie-Thérèse Pink in its previous hairpin setting. © Christie's Images Ltd 2025.

Fancy purple-pink modified kite brilliant-cut diamond of 10.38 carats, round diamonds, blackened platinum, unsigned, pink JAR case, accompanied by a gold and silver hairpin, circa likely 1868, pink JAR ring case and fitted purple hairpin case
GIA, 2025, report no. 10064909: 10.38 carats, Fancy Purple-Pink, natural color, SI1 clarity
Size/Dimensions: US ring size 5 ¼; hairpin 12.7 cm (5 in)
Gross Weight: 15.5 grams

Additional highlights include a Magnificent Unmounted Diamond of 66.74 carats, D color, VVS1 clarity (Estimate $3,200,000 - 4,200,000). Another highlight is a Fine Colored Diamond Ring featuring a 17.98-carat light blue pear brilliant-cut diamond set in platinum (Estimate $1,000,000 - 1,500,000) from Important Jewels from a Distinguished Family Collection.

Lot 83. A Magnificent Unmounted Diamond of 66.74 carats, D color, VVS1 clarity (Estimate $3,200,000 - 4,200,000). © Christie's Images Ltd 2025.

Round brilliant-cut diamond of 66.74 carat
GIA, 2023, report no. 1182650191: 66.74 carats, D color, VVS1 clarity, excellent cut, polish and symmetry, Type IIa

The sale also features several outstanding signed jewels such as a Cartier Onyx, Emerald, And Diamond 'Panthère' Brooch (Estimate $250,000 -350,000), a Cartier Art Deco Multi-Gem and Diamond Shoulder Brooch (Estimate $100,000 - 150,000), and a Rare Van Cleef & Arpels Sapphire and Diamond Ring (Estimate $400,000 - 600,000) as well as An Important Chaumet Colored Diamond and Sapphire Ring (Estimate $500,000 - 700,000).

Lot 37. Cartier Onyx, Emerald, And Diamond 'Panthère' Brooch (Estimate $250,000 -350,000). © Christie's Images Ltd 2025.

Designed as a hanging panther, variously-shaped onyx plaques, pear-shaped emeralds, round diamonds, platinum and 18k white gold (French marks), circa 1970, signed Cartier, Paris, maker's marks (Société de Fabrication de Haute Joaillerie), numbered, red Cartier case
Size/Dimensions: 7.9 x 5.4 cm (3 1⁄8 x 2 1⁄8 in)
Gross Weight: 80.2 grams

Lot 40. Cartier Art Deco Multi-Gem and Diamond Shoulder Brooch (Estimate $100,000 - 150,000). © Christie's Images Ltd 2025.

Oval and round emerald cabochons, carved, buff-top and square-shaped emeralds, round ruby cabochons, table and old-cut and diamonds, black enamel, platinum and yellow gold, circa 1924, unsigned, areas of deficiency to the enamel and chips to the emeralds; accompanied by detachable tassel of later addition recreated from original records by Cartier workshops, seed pearls and onyx beads, square-shaped emeralds, round cabochon emeralds and rubies, black enamel, round diamonds, 18k white gold (French mark), signed Cartier, maker's mark, numbered, accompanied by a black silk cord, red Cartier case
Cartier, 2010: Certificate of Authenticity (brooch)
Cartier, 2012: Certificate of Authenticity (brooch and tassel)
Size/Dimensions: 15.3 cm (6 in), without detachable tassel 6.3 x 3.1 cm (2 ½ x 1 ¼ in)
Gross Weight: 67.5 grams

Lot 82. A Rare Van Cleef & Arpels Sapphire and Diamond Ring (Estimate $400,000 - 600,000). © Christie's Images Ltd 2025.

Square cushion mixed-cut sapphire of 8.45 carats, round and pear-shaped diamonds, 18k yellow gold (French mark), signed Van Cleef & Arpels, numbered, maker's mark (Successeurs d’Ehret), navy Van Cleef & Arpels case
AGL, 2025, report no. 1147892: Kashmir, no gemological evidence of heat, clarity enhancement: none
SSEF, 2025, report no. 146230: 8.455 carats, Kashmir, no indications of heating
Size/Dimensions: US ring size 5 ½
Gross Weight: 8.6 grams

Lot 29. An Important Chaumet Colored Diamond and Sapphire Ring (Estimate $500,000 - 700,000). © Christie's Images Ltd 2025.

Fancy intense yellow oval brilliant-cut diamond of 21.20 carats, triangular fancy-cut sapphires, 18k yellow gold (French mark, partially obscured), signed Chaumet, New York
GIA, 2025, report no. 2233547477: 21.20 carats, Fancy Intense Yellow, natural color, VVS2 clarity, Not Potential/Improvable
Size/Dimensions: measures as US ring size 4 ½, however, due to sizer fits as US ring size 4
Gross Weight: 11.3 grams.

Among the jewels with exceptional provenance is a Suzanne Belperron Star Sapphire and Sapphire 'Plastron' Necklace, (Estimate $250,000 to $350,000), originally from the collection of Elsa Schiaparelli. A second piece formerly owned by Schiaparelli is the Suzanne Belperron Diamond 'Torsade' Bracelet (Estimate $100,000-150,000), in which sections of diamonds and platinum intertwine to form dynamic sculptural shapes.

Lot 60. Originally from the collection of Elsa Schiaparelli. Suzanne Belperron Star Sapphire and Sapphire 'Plastron' Necklace, (Estimate $250,000 to $350,000). © Christie's Images Ltd 2025.

Of bib design, oval and round star sapphire and sapphire cabochons, 18k white gold (French import mark), circa 1935, unsigned
Olivier Baroin, 2014: Copy of Certificate of Authenticity
Size/Dimensions: 33.0 x 4.4 cm (13 x 1 ¾ in)
Gross Weight: 135.6 grams

Lot 61. Suzanne Belperron Diamond 'Torsade' Bracelet (Estimate $100,000-150,000). © Christie's Images Ltd 2025.

Old, round and single-cut diamonds, platinum and 18k white gold (French marks), circa 1932, unsigned
Francoise Cailles, 2007: Copy of Evaluation
Size/Dimensions: inner continuous circumference 15.9 cm (6 ¼ cm)
Gross Weight: 95.8 grams

Lot 110. A Fine Colored Diamond Ring (Estimate $1,000,000 to $1,500,000). © Christie's Images Ltd 2025.

Light blue pear brilliant-cut diamond of 17.98 carats, platinum
GIA, 2025, report no. 5232529029: 17.98 carats, Light Blue, natural color, VVS2 clarity, potentially Internally Flawless, Type IIb
Size/Dimensions: measures as US ring size 4 however, due to sizer fits as US ring size 3 ½
Gross Weight: 8.7 grams

Lot 23. The Collection of Lucille Coleman. A Fine Van Cleef & Arpels Ruby and Diamond 'Mystery-Set Deux Feuilles' Clip-Brooch  (Estimate $200,000 to $300,000). © Christie's Images Ltd 2025.

Designed as two leaves, calibré-cut rubies, round and baguette-cut diamonds, platinum and 18k white gold (French marks), circa 1965, signed VCA, numbered

Size/Dimensions: 9.5 x 4.4 cm (3 ¾ x 1 ¾ in)
Gross Weight: 34.9 grams