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

A Victorian gem set brooch, modelled as a realistically chased and engraved spray of ivy leaves with a bloomed finish, accented with a single pearl and a spray of small cinquefoil flowerheads, each petal set with an old brilliant-cut diamond and applied with a shield bug beetle (family Pentatomiae) pavé set with small cabochon rubies, brooch length 69mm. £400-500

The technique of chasing and engraving coloured gold in imitation of nature was developed in the 1850s.

See: Tait, H. (ed), The Art of the Jeweller: A catalogue of the Hull Grundy Gift to the British Museum, British Museum Press, 1984, chapters 8 and 9, particularly plate 762.