An 18ct gold turquoise and diamond duck brooch,... Lot 18

An 18ct gold turquoise and diamond duck brooch, c.1970, by Ben Roosevelt, a round cabochon turquoise set eye, with a crescent of graduated eight cut diamonds, grain set in white gold, to textured body and plain polished beak, with pin and roller catch, London 1975, pin tested as approximately 9ct gold, 38 x 25mm, 12.05g