A sapphire and diamond cluster pendant, the cushion-shaped old-cut sapphire, weighing 13.01 carats, set within an old brilliant-cut diamond cluster surround, diamonds approximately 0.90 carat, mounted in yellow gold, length 2.5 cm . Accompanied by a report from the Gem Studies Laboratory (Gsl), Australia, stating that the 'Royal Blue' sapphire is of Ceylon (Sri Lankan) origin, with no evidence of heat treatment. Report number AA52138, dated September 24th 2013.