A cased Art Deco influenced diamond, 18 ct yellow metal and precious white metal cufflinks, waistcoat button and shirt stud set, each oblong/square with canted corners and two bevelled and wavy engine-turned edges, centred by a millegrain-set diamond brilliant on a finely chequered mother of pearl plaque, Jay, Attenborough Ltd, 142 Oxford St, London, links and buttons, stamped "18 ct and Plat", circa 1930s, 13 mm x 11 mm, 13.1 g aggregate weight