Sapphire and diamond ring, of cluster design centring on a modified oval cut sapphire weighing 4. 72 carats claw set within a round brilliant cut diamond surround to openwork diamond set shoulders, mounted in 18ct white gold, size N. Accompanied by a Grs report numbered GRS2011-070412T, dated 5 July 2011, stating that the 4. 72 carat sapphire is natural blue colour with no indications of thermal treatment and of Sri Lankan origin.