platinum ring with aquamarine

A platinum Art Deco ring set with three aquamarines (the center stone is approximaely 23 carats and the side stones are approximately 1.9 carat, so in total app. 27 carats, numbered: 36140, Oscar Heyman, with the original assignment card from 1947, American.

ring size: 16.75 mm
weight: 12.61 gram
measurement: 2.3 x 1.8 cm. including the two stones on the side.