Platinum ring set with an octagonal emerald surrounded by 6 old-cut diamonds and smaller old-cut or rose-cut diamonds. French work of the 1910s. Finger size: 51. Emerald size: approx. 6.7 x 6.7 x 4.4 mm. Gross weight: 6.4 g (chips, bumps) A French 1910 emerald and diamond ring