Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

A diamond set necklace composed of two woven ropetwist chains, with lozenge-shaped diamond slider between, pavé set throughout with brilliant-cut diamonds, and suspending a diamond edged heart pendant drop, the chain terminals each similarly set with diamond heart pendants, two colour precious metal mounted, clasp stamped ‘750’, to box clasp, length of two mesh chains approximately 22cm and 24cm (excluding clasp and heart-shaped pendants), with Kutchinsky case. £1800-2000