A sapphire and diamond ring by Graff

A sapphire and diamond ring by Graff, the cushion-shaped sapphire weighs 4.58cts and is set with a tapered baguette-shaped diamond to each shoulder in platinum. The inside shank signed Graff. With case by Graff.

Accompanied by report number 87222 dated 18th August 2016 from SSEF, Switzerland stating that the antique cushion, brilliant/step cut sapphire weighs 4.585cts and is a natural royal blue sapphire with no indications of heating. Origin: Kashmir.

"Royal blue" is a standardised term used by SSEF and Gübelin Gem Lab to describe sapphires of superior quality and with a saturated blue colour, either pure or with a very slight purplish tint, free of any type of treatment and relatively free of eye-visible or dark inclusions, and exhibiting a homogeneous colour distribution with vivid internal reflections.