VAN CLEEF & ARPELS Gold, emerald and onyx brooch, 'Puppy', CHF6,500–10,000

Sapphire and diamond ring weighing 16.40 carats, Kashmir, no heat, with SSEF and Gübelin appendix letters, CHF1,800,000–2,860,000

Fancy Vivid Blue diamond ring weighing 1.35 carats, CHF1,800,000–2,860,000

HENNELL Cultured pearl and diamond necklace, from Queen Mary and the Duke and Duchess of Beaufort, CHF120,000–180,000

VAN CLEEF & ARPELS Amethyst, coloured sapphire, coral and diamond sautoir, ‘Liz’, CHF 200,000–300,000

LOUIS GALOPIN Gold snuffbox, 1798-1809, CHF28,000–32,000

HENRI AUGUSTE Pair of silver bottle coolers, 1789-1790, CHF60,000–70,000