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

A pair of diamond set earclips, by Gübelin, of tapered hoop form beneath domed surmount, pavé set with brilliant-cut diamonds, mounted in yellow gold, with polished ropetwist detail to the shoulders, to clip fittings, stamped ‘750’ and bearing Gübelin maker’s mark and French assay/export mark, length 19mm. £1400-1600