An Art Deco sapphire and diamond ring

An Art Deco sapphire and diamond ring, the emerald cut sapphire is set with four shoulder diamonds (one damaged) in an expanding platinum mount. Minimum size M.

Accompanied by report number 11348 dated 22nd May 2015 from The Gem and Pearl Laboratory, London stating that the sapphire measures 9.4 x 8.5 x 6.0mm and is a natural sapphire with no evidence of heat treatment. Origin opinion: Sri Lanka.