An aquamarine and diamond oval cluster ring in Art Deco style, centred with an oval mixed-cut aquamarine, approximately 1.78cts, collet set within a round brilliant diamond sixteen stone border, approximately 0.72cts total, set throughout in white on a ‘D’ section shank with knife-edge shoulders, stamped ‘Plat’, size M, 4.5 grams gross. Aquamarine 8.7mm x 7.4mm x 4.6mm. Diamonds 16 @ 2.2/2.3mm.