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BAGUE DIAMANT Old-cut diamond of 5.22 carats, French import assay mark for platinum (850‰) Size/Dimensions: EU ring size 59 / US ring size 8¹⁄₂ Gross weight: 6.56 grams

BAGUE DIAMANT

Estimation : 20000 - 30000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BRACELET MANCHETTE TRANSFORMABLE ACCOMPAGNÉ DE DEUX CLIPS ONYX ET DIAMANTS Clips can be clipped onto the bangle or worn alone Onyx, round and old-cut diamond, French import assay marks for platinum (850‰) and 18K yellow gold (750‰) Diamonds: for an approximate total weight of 10.00-11.00 carats Size/Dimensions: inner continuous circumference 17.5 cm, clips 4.5 x 2.8 cm Gross weight: 117.01 grams

BRACELET MANCHETTE TRANSFORMABLE ACCOMPAGNÉ DE DEUX CLIPS ONYX ET DIAMANTS

Estimation : 30000 - 50000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

MONTURE CARTIER BAGUE DIAMANT Brilliant-cut diamond of 13.13 carats, French assay mark for platinum (950‰), signed Monture Cartier, French maker’s mark GIA, 2025, report n°5231741988: 13.13 carats, Q to R colour, VS2 clarity, no fluorescence Size/Dimensions: EU ring size 52 / US ring size 6 Gross weight: 11.76 grams

MONTURE CARTIER BAGUE DIAMANT

Estimation : 100000 - 120000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

CARTIER BAGUE SAPHIR ET DIAMANTS Cushion-shaped sapphire, triangular-shaped diamonds, French assay mark for 18K white gold (750‰), signed Cartier, French maker’s mark (Société Georland), numbered Gem Paris, 2025, report n°20251978499-2: Sri-Lanka, non-heated LFG, 2025, report n°421695: Sri Lanka (Ceylon), no indication of thermal treatment Sapphire: for an approximate weight of 2.30-2.50 carats Diamonds: for an approximate total weight of 0.40-0.60 carat Size/Dimensions: EU ring size 53 / US ring size 6¹⁄₄ Gross weight: 8.73 grams

CARTIER BAGUE SAPHIR ET DIAMANTS

Estimation : 10000 - 15000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

MONTRE SAPHIRS ET DIAMANTS Mechanical movement, round sapphires, old, single-cut and square-shaped diamonds, French assay marks for platinum (950‰) and French import assay mark for 18K white gold (750‰), French maker’s mark, 1940s Size/Dimensions: bracelet 17.5 cm, case 20.0 mm Gross weight: 85.24 grams

MONTRE SAPHIRS ET DIAMANTS

Estimation : 7000 - 10000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

VAN CLEEF & ARPELS PAIRE DE BOUCLES D’OREILLES OR French assay marks and French import assay marks for 18K yellow gold (750‰), signed VCA, French maker’s mark (André Vassort), numbered Size/Dimensions: 2.8 cm high Gross weight: 21.50 grams

VAN CLEEF & ARPELS PAIRE DE BOUCLES D’OREILLES OR

Estimation : 6000 - 8000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE SAPHIR ET DIAMANTS Cushion-shaped sapphire of 4.96 carats, round diamonds, French assay mark for platinum (950‰), French maker’s mark SSEF, 2022, report n°121090: 4.961 carats, no indications of heating Diamonds: for an approximate total weight of 1.05-1.15 carat Size/Dimensions: EU ring size 53 / US ring size 6¹⁄₂ Gross weight: 12.27 grams SSEF, 2022, report n°121090: 4.961 carats, no indications of heating

BAGUE SAPHIR ET DIAMANTS

Estimation : 12000 - 15000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

SUZANNE BELPERRON BAGUE SAPHIR ET SAPHIR DE COULEUR ’DOUBLE CORPS’ Oval-shaped sapphire of 5.72 carats and oval-shaped coloured sapphire of 5.24 carats, French assay mark for 18K yellow gold (750‰), April 1967 SSEF, 2025, report n°149439: sapphire of 5.724 carats, Ceylon (Sri Lanka), no indications of heating / coloured sapphire of 5.246 carats, Ceylon (Sri Lanka), indications of heating Olivier Baroin, 2025: Certificate of Authenticity n°251205, original piece manufactured in April 1967 for Suzanne Belperron Size/Dimensions: EU ring size 50/ US ring size 5¹⁄₄ Gross weight: 13.40 grams

SUZANNE BELPERRON BAGUE SAPHIR ET SAPHIR DE COULEUR ’DOUBLE CORPS’

Estimation : 40000 - 50000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

SUZANNE BELPERRON BAGUE AMÉTHYSTES ET RUBIS Sugarloaf cabochon amethyst, calibré-cut amethysts and rubies, French assay mark for platinum (950‰), circa 1940 Olivier Baroin, 2025: Certificate of Authenticity n°251203, original piece manufactured circa 1940 for Suzanne Belperron Main amethyst: for an approximate weight of 6.20-6.60 carats Size/Dimensions: EU ring size 43¹⁄₂/ US ring size 2¹⁄₄ Gross weight: 17.79 grams

SUZANNE BELPERRON BAGUE AMÉTHYSTES ET RUBIS

Estimation : 25000 - 40000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

VAN CLEEF & ARPELS BRACELET ÉMERAUDE ET DIAMANTS Rectangular step-cut emerald, round, single and baguette tapered-cut diamonds, French import assay marks for platinum (850‰), 18K yellow and white gold (750‰), signed Van Cleef & Arpels N.Y, numbered, 1950s Emerald: for an approximate weight of 2.20-2.40 carats Diamonds: for an approximate total weight of 5.50-5.80 carats Size/Dimensions: 18.0 cm long Gross weight: 54.91 grams

VAN CLEEF & ARPELS BRACELET ÉMERAUDE ET DIAMANTS

Estimation : 30000 - 50000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

COLLIER DIAMANTS MILIEU DU XXe SIÈCLE Variously-shaped diamonds, French import assay marks for platinum (850‰) and 9K white gold (375‰), numbered, 1950s Diamonds: for an approximate total weight of 19.00-22.00 carats Size/Dimensions: 38.0 cm Gross weight: 16.33 grams

COLLIER DIAMANTS MILIEU DU XXe SIÈCLE

Estimation : 40000 - 60000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

COLLIER PENDENTIF PERLES, ONYX, RUBIS ET DIAMANTS Round and drop-shaped pearls, onyx, ruby bead, single-cut diamonds, French assay marks for platinum (950‰) and 18K white gold (750‰), 1920s Size/Dimensions: chain 49.0 cm long, pendant 11.0 cm long Gross weight: 55.42 grams Please note that the pearls have not been tested for natural origin.

COLLIER PENDENTIF PERLES, ONYX, RUBIS ET DIAMANTS

Estimation : 15000 - 20000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE RUBIS ET DIAMANTS Rectangular-shaped ruby of 3.32 carats, rectangular-shaped and single-cut diamonds, French import assay mark for platinum (850‰) SSEF, 2024, report n°142988: 3.321 carats, Burma (Myanmar), no indications of heating Diamonds: for an approximate total weight of 0.45-0.65 carat Size/Dimensions: EU ring size 58 / US ring size 8¹⁄₄ Gross weight: 4.97 grams

BAGUE RUBIS ET DIAMANTS

Estimation : 25000 - 35000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

RENÉ BOIVIN BAGUE SAPHIRS ET DIAMANTS ’SERPENT’ Round sapphires, round diamonds, French assay mark for 18K yellow gold (750‰), signed René Boivin, French maker’s mark (Voirin-Saurel), 1976 Maison René Boivin, 2025: Certificate of Authenticity n°202512YRS, original piece manufactured by René Boivin in March 1976 after a drawing by Marie-Caroline de Brosses Sapphires: for an approximate total weight of 3.80-4.20 carats Diamonds: for an approximate total weight of 0.30-0.50 carat Size/Dimensions: EU ring size 47¹⁄₂/ US ring size 4¹⁄₄ Gross weight: 15.83 grams

RENÉ BOIVIN BAGUE SAPHIRS ET DIAMANTS ’SERPENT’

Estimation : 25000 - 30000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

SAUTOIR TRANSFORMABLE JADE JADÉITE ET DIAMANTS Pendant detachable Jadeite jade discs, round diamonds, French import assay marks for 18K yellow and white gold (750‰) GIA, 2025, report n°1236488598: 1.03 carat, H colour, SI2 clarity, no fluorescence LFG, 2025, report n°415554: 1.10 carat, I colour, SI2 clarity, faint fluorescence HRD, 2024, report n°240000026549: 1.01 carat, slightly tinted white + (I) colour, VVS2 clarity, nil fluorescence HRD, 2024, report n°240000026542: 1.01 carat, slightly tinted white + (I) colour, loupe clean clarity, nil fluorescence HRD, 2024, report n°240000026527: 1.01 carat, rare white + (F) colour, SI1 clarity, nil fluorescence HRD, 2023, report n°230000148902: 1.01 carat, rare white (G) colour, SI2 clarity, nil fluorescence HRD, 2018, report n°180000097522: 1.00 carat, exceptional white + (D) colour, VVS2 clarity, nil fluorescence GIA, 2018, report n°5306613075: 1.01 carat, H colour, SI2 clarity, no fluorescence European gemmological laboratory, 1976, report n°A29185: 1.03 carat, 1+ (River), Flawless, no florescence Diamonds: for an approximate total weight of 32.00-34.00 carats Size/Dimensions: chain 82.0 cm long, pendant 5.9 cm high Gross weight: 169.83 grams Please note that some of these reports are over five years old and may require an update.

SAUTOIR TRANSFORMABLE JADE JADÉITE ET DIAMANTS

Estimation : 60000 - 80000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BAGUE RUBIS ET DIAMANTS Cushion-shaped ruby of 5.41 carats, old-cut diamonds, French import assay marks for 18K yellow gold (750‰) and platinum (850‰) Carat Gem Lab, 2025, report n°CGL33400: 5.41 carats, Burma, no indications of heating, indications of minor clarity enhancement (oil) SSEF, 2025, report n°150008: 5.41 carats, Burma (Myanmar), no indications of heating Diamonds: for an approximate total weigh of 4.50-5.50 carats Size/Dimensions: EU ring size 53 / US ring size 6¹⁄₂ Gross weight: 14.61 grams

BAGUE RUBIS ET DIAMANTS

Estimation : 100000 - 150000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

DEUX BRACELETS KADA RUBIS, ÉMAIL ET DIAMANTS XIXe SIÈCLE Oval-shaped rubies on foil, red, green and blue enamel, old and single-cut diamonds, French import assay marks for 18K yellow gold (750‰), circa 1850 LFG, 2021, report n°385151: approximately 0.5 carat, Burma (Myanmar), no indication of thermal enhancement, presence of a coloured material on the back of the stone Size/Dimensions: inner continuous circumference 18.0 cm Gross weight: 177.37 grams

DEUX BRACELETS KADA RUBIS, ÉMAIL ET DIAMANTS XIXe SIÈCLE

Estimation : 20000 - 40000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025

BRACELET ÉMERAUDES Rectangular step-cut emeralds, French assay marks for 18K yellow gold (750‰), fitted case Emeralds: for an approximate total weight of 8.00-9.00 carats Size/Dimensions: 17.1 cm long Gross weight: 20.94 grams

BRACELET ÉMERAUDES

Estimation : 30000 - 50000 €

Maison de vente : Christie’s

Date de la vente : 17/12/2025