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

A 18ct white gold diamond band ring, by Cartier, the nine brilliant-cut diamonds in box settings, to polished broad band, stamped to the inside shank ‘Cartier 750 J15523 52 ©1999’, ring size M (leading edge). £2500-3500