An Art Deco sapphire and diamond ring

An Art Deco sapphire and diamond ring, the octagonal cut sapphire weighs 5.71cts and is set with six small diamonds to each triangular shoulder in platinum. Size M.

Accompanied by report number 75940 dated 20th August 2014 from SSEF stating that the step cut sapphire measures 10.72 x 8.73 x 5.77mm, weighs 5.714ct, with blue of medium saturation. The natural sapphire shows no indication of heating. Origin: Ceylon (Sri Lanka).

Accompanied by report number 09614 dated 21st March 2014 from The Gem and Pearl Laboratory, London stating that the emerald cut sapphire measures 10.7 x 8.7 x 5.7mm, weighs 5.71ct. With no evidence of treatment observed. Origin opinion: Sri Lanka.