ALEXANDRITE AND DIAMOND RING The octagonal-shaped colour change alexandrite weighing 4.56 carats, is claw-set between a pair of trilliant-cut diamonds together weighing approximately 0.60 carats, to pavé-set diamond shoulders and a continuously engraved half hoop, mounted in platinum, size I. Accompanied by a GIA report numbered 5222394341, dated 15 April 2022, stating that the 4.56 carat colour-change alexandrite is natural.