Lot 512 , A colour-change sapphire and diamond ring

A colour-change sapphire and diamond ring, claw-set with an oval cushion-shaped colour-change sapphire measuring approximately 6.6 x 5.9 x 3.9mm, weighing 1.35 carats, to a navette-shaped cluster of brilliant-cut diamonds totalling approximately 0.60 carats, mounted in white gold, size M1/2, stamped 750, gross weight approximately 4 grams

Accompanied by GCS report no. 5786-2740, stating that the sapphire is of Madagascar origin, with no indications of heat treatment
£1,500-2,500