A diamond, ruby, emerald, sapphire and platinum plaque brooch, the geometric shaped platinum plaque brooch depicting a butterfly amongst flowers, set with yellow marquise cut diamonds, marquise cut emeralds and blue sapphires cut en cabochon, to a background pave set with white brilliant cut diamonds totalling 2.32cts, framed with Brazil cut rubies and onyx, and overlaid with two adjustable diamond set 'H' sections converting to a pearl clasp, with a pin and rolling lock, hallmarked London stamped Gt (Geoffrey Turk). Geoffrey Turk is a London jeweller. In the 1960's and early 1970's he was a Director of Andrew Grima Ltd. In 1976 he established a workshop in Soho making bespoke jewellery in 18ct gold and platinum and has been doing so ever since