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COLLIER ÉMERAUDES ET DIAMANTS DÉBUT DU XIXe SIÈCLE Comprising 4 strands Faceted emerald beads, marquise-shaped diamond, single and old-cut diamonds, French import assay marks for platinum (850‰) and 14k white gold (585‰), 1910s Main diamond: weighing approximately 0.30-0.50 carat Size/Dimensions: 45.0 cm long Gross weight: 36.81 grams

COLLIER ÉMERAUDES ET DIAMANTS DÉBUT DU XIXe SIÈCLE

Estimation : 10000 - 15000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE DIAMANT Emerald-cut diamond of 6.14 carats, French import assay mark for platinum (850‰) LFG, 2025, report n°416446: 6.14 carats, J colour, VVS2 clarity, weak fluorescence Size/Dimensions: EU ring size 54 / US ring size 6¹⁄₄ Gross weight: 5.53 grams

BAGUE DIAMANT

Estimation : 40000 - 60000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

DEUX BROCHES ART DÉCO DIAMANTS Old, single and baguette-cut diamonds, French assay marks for platinum (950‰) and 18K white gold (750‰), French maker’s marks, rounded brooch is numbered, circa 1930 Diamonds: for an approximate total weight of 14.00-16.00 carats Size/Dimensions: rounded brooch 4.2 x 4.2 cm, rectangular brooch 6.2 x 2.5 cm Gross weight: 39.64 grams

DEUX BROCHES ART DÉCO DIAMANTS

Estimation : 15000 - 25000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

MONTURE BOUCHERON BAGUE DIAMANTS Brilliant-cut diamond of 7.95 carats and round diamonds, French assay mark for 18K white gold (750‰), signed MT Boucheron, French maker’s mark (Société Boucheron), numbered GIA, 2025, report n° 2537650555: 7.95 carats, K, Faint Brown colour, VS1 clarity, no fluorescence Remaining diamonds: for an approximate total weight of 1.90-2.10 carats Size/Dimensions: EU ring size 59 / US ring size 8¹⁄₄ Gross weight: 13.09 grams

MONTURE BOUCHERON BAGUE DIAMANTS

Estimation : 90000 - 120000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE RUBIS ET DIAMANTS Oval-shaped ruby of 4.42 carats, round diamonds, French assay mark for 18K white and yellow gold (750‰), French maker’s mark SSEF, 2025, report n°150569: 4.423 carats, Burma (Myanmar), no indications of heating, minor oil Diamonds: for an approximate total weight of 1.30-1.50 carat Size/Dimensions: EU ring size 52 / US ring size 6 Gross weight: 8.66 grams

BAGUE RUBIS ET DIAMANTS

Estimation : 20000 - 40000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE SAPHIR ET DIAMANTS Cushion-shaped sapphire of 7.64 carats, oval-shaped diamonds, French assay mark for platinum (950‰), French maker’s mark SSEF, 2024, report n°141656: 7.647 carats, Ceylon (Sri Lanka), no indications of heating Diamonds: for a total approximate weight of 4.70-4.90 carats Size/Dimensions: EU ring size 52¹⁄₂ / US ring size 6¹⁄₄ Gross weight: 13.79 grams SSEF, 2024, report n°141656: 7.647 carats, Ceylon (Sri Lanka), no indications of heating

BAGUE SAPHIR ET DIAMANTS

Estimation : 40000 - 60000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

VAN CLEEF & ARPELS BROCHE SAPHIRS, SAPHIRS DE COULEUR ET RUBIS ’PASSE-PARTOUT’ Cushion-shaped and round sapphires, cushion-shaped coloured sapphires, round and calibré-cut rubies, French assay marks for 18K yellow gold (750‰), signed Van Cleef & Arpels, numbered, 1940s Sapphires: for an approximate total weight of 16.50-18.50 carats Coloured sapphires: for an approximate total weight of 14.50-16.50 carats Rubies: for an approximate total weight of 1.50-2.50 carats Size/Dimensions: 9.2 x 6.9 cm Gross weight: 56.37 grams

VAN CLEEF & ARPELS BROCHE SAPHIRS, SAPHIRS DE COULEUR ET RUBIS ’PASSE-PARTOUT’

Estimation : 40000 - 50000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE SAPHIR ET DIAMANTS Sugarloaf sapphire of 3.13 carats, triangular-shaped diamonds, French import assay mark for 18K white gold (750‰) SSEF, 2025, report n°145769: 3.130 carats, Burma (Myanmar), no indications of heating Diamonds: for a total approximate weight of 1.10-1.30 carat Size/Dimensions: EU ring size 54 / US ring size 6¹⁄₄ Gross weight: 6.49 grams

BAGUE SAPHIR ET DIAMANTS

Estimation : 15000 - 20000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

CARTIER PAIRE DE BOUCLES D’OREILLES PIERRES DE COULEURS ET DIAMANTS ’NOUVELLE VAGUE’ Round cabochon moonstones, round cabochon turquoises, round cabochon lapis-lazuli, round cabochon aquamarines, round sapphires, round diamonds, French assay marks and Swiss assay marks for 18K yellow gold (750‰), signed Cartier, French maker’s marks, numbered Diamonds: for an approximate total weight of 2.20-2.40 carats Size/Dimensions: 6.0 cm Gross weight: 15.94 grams

CARTIER PAIRE DE BOUCLES D’OREILLES PIERRES DE COULEURS ET DIAMANTS ’NOUVELLE VAGUE’

Estimation : 10000 - 15000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

PATEK PHILIPPE MONTRE REF 3565/1 ‘IOS’ Automatic movement, French import assay marks and Swiss assay marks for 18K yellow gold (750‰) and stainless steel, dial and buckle signed Patek Philippe, dial and case back signed IOS, circa 1970, Patek Philippe IOS fitted case Size/Dimensions: bracelet 23.0 cm (adjustable), case 36.0 mm, dial 29.0 mm Gross weight: 85.70 grams

PATEK PHILIPPE MONTRE REF 3565/1 ‘IOS’

Estimation : 12000 - 18000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

JEAN VENDOME SAUTOIR TRANSFORMABLE DIAMANTS LIGNE ’PÉPITE’ Pendant convertible into a brooch Round diamonds, French assay mark for 18K yellow gold (750‰) and French import assay marks for platinum (850‰) and 18K yellow gold (750‰), pendant signed Vendome, French maker’s mark (Jean Vendome) on neckchain, 1966 Size/Dimensions: sautoir length 72.0 cm, pendent/brooch 7.0 x 2.0 cm Gross weight: 69.99 grams

JEAN VENDOME SAUTOIR TRANSFORMABLE DIAMANTS LIGNE ’PÉPITE’

Estimation : 25000 - 30000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

CHOPARD MONTRE LAPIS-LAZULI Mechanical movement, lapis lazuli dial background, French import assay marks and Swiss assay marks for 18K white gold (750‰), dial signed Chopard Genève, maker’s mark, numbered, 1970s Size/Dimensions: bracelet inner continuous circumference 17.5 cm, dial 37.0 mm Gross weight: 52.82 grams Please note that the watch was serviced in 2025 by Chopard and comes with a 1-year warranty.

CHOPARD MONTRE LAPIS-LAZULI

Estimation : 6000 - 8000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

RENÉ BOIVIN BAGUE TANZANITE, DIAMANTS DE COULEUR ET DIAMANTS ’DÉCALÉE’ Oval-shaped tanzanite, round coloured diamonds and diamonds, French assay mark for 18K yellow gold (750‰), signed René Boivin, French maker’s mark (Société René Boivin), 1977, René Boivin fitted case Maison René Boivin, 2025: Certificate of Authenticity n°202512YRD, original piece manufactured by René Boivin in November 1977 after a drawing by Marie-Caroline de Brosses Gem Paris, 2025, report n°202419788470-3: tanzanite, tanzanites are commonly modified by use of thermal process Tanzanite: for an approximate weight of 3.00-3.40 carats Coloured diamonds: for an approximate total weight of 1.50-1.70 carat Diamonds: for an approximate total weight of 0.30-0.50 carat Size/Dimensions: EU ring size 50¹⁄₂/ US ring size 5¹⁄₄ Gross weight: 12.54 grams Please note that coloured diamonds have not been tested for natural colour.

RENÉ BOIVIN BAGUE TANZANITE, DIAMANTS DE COULEUR ET DIAMANTS ’DÉCALÉE’

Estimation : 20000 - 30000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

RAYMOND TEMPLIER BAGUE ART DÉCO JADÉITE ET DIAMANTS Oval jadeite cabochon, old and single-cut diamonds, French assay mark for platinum (950‰), French maker’s mark partially erased (Templier), circa 1925, Raymond Templier fitted case Gem Paris, 2025, report n°20251978324: Jade A, colourless wax on surface Jade: measuring approximately 26.0 x 18.0 x 9.5 mm Size/Dimensions: EU ring size 58 / US ring size 8¹⁄₄ Gross weight: 23.34 grams Please note that the ring is not signed Raymond Templier.

RAYMOND TEMPLIER BAGUE ART DÉCO JADÉITE ET DIAMANTS

Estimation : 5000 - 8000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE SAPHIR ET DIAMANTS Octagonal step-cut sapphire of 4.84 carats, square-shaped diamonds, French import assay mark for platinum (850‰) SSEF, 2025, report n°131065: 4.847 carats, Burma, no indications of heating Diamonds: for an approximate total weight of 0.40-0.60 carat Size/Dimensions: EU ring size 53¹⁄₂ / US ring size 6¹⁄₄ Gross weight: 10.78 grams

BAGUE SAPHIR ET DIAMANTS

Estimation : 50000 - 60000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE SAPHIR ET DIAMANTS Oval-shaped sapphire of 15.36 carats, rectangular-shaped diamonds, French import assay mark for 18K white gold (750‰) Gübelin, 2023, report n°23020077: 15.36 carats, no indications of heating Diamonds: for an approximate total weight of 1.00-1.20 carat Size/Dimensions: EU ring size 54 / US ring size 6¹⁄₄ Gross weight: 13.18 grams

BAGUE SAPHIR ET DIAMANTS

Estimation : 8000 - 12000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

DEMI-PARURE SAPHIRS ET DIAMANTS Comprising a ring and a pair of earrings Oval-shaped sapphires, old-cut diamonds, French import assay marks for 14K rose gold (585‰) and silver (800‰) Gem Paris, 2025, report n°20251978493-5: 2 sapphires on earrings, Sri Lanka, non heated Gem Paris, 2025, report n°20251978493-10: 1 sapphire on a ring, Sri Lanka, non heated Sapphires: for an approximate weight of 4.10-4.30 carats on ring, 3.90-4.10 carats and 4.40-4.60 carats on earrings Diamonds: for an approximate total weight of 4.80-5.10 carats Size/Dimensions: EU ring size 55 / US ring size 7, earrings 2.3 cm Gross weight: 15.05 grams

DEMI-PARURE SAPHIRS ET DIAMANTS

Estimation : 10000 - 15000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

COLLIER DIAMANTS Baguette-cut diamonds, French assay marks for 18K white gold (750‰), marker’s mark Diamonds: for an approximate total weight 19.00-21.00 carats Size/Dimensions: necklace length 42.0 cm Gross weight: 48.05 grams

COLLIER DIAMANTS

Estimation : 20000 - 30000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025