This is a beautiful piece. Indian in origin, from Rajasthan, this is an emerald and diamond ring. Designed as a step cut emerald in an openwork quatrefoil motif set with diamond chips, mounted in silver and gold and on a gold shank. Valuer has stated it is possibly late 19th century in age, although it could be more recent than that. To me it has an art deco feel. Either way it is a stunning piece.  It is a NZ/UK size Q, US size 8. Fabulous.