A Sri Lankan colour-change sapphire and diamond cluster ring. The cushion-shape colour-change sapphire, with circular-cut diamond scalloped surround and pierced gallery. Verbal from GCS, stating Sri Lanka, colour change, no heat. Estimated dimensions of sapphire 10.6 by 9.7 by 6.7mms. Estimated total diamond weight 1ct. Ring size P. Weight 6.6gms.