A FINE SAPPHIRE AND DIAMOND CLUSTER RING, FIRST QUARTER OF 20TH CENTURY The elongated oval-shaped sapphire weighing approximately 6.46cts within a twelve-claw setting, framed by old brilliant-cut diamonds and similarly-cut diamond shoulders, mounted in 18K gold and platinum, diamonds approximately 2.50cts total, French assay marks, ring size J¾ Accompanied by a report from C. Dunaigre laboratory in Switzerland, stating that the sapphire weighing approximately 6.46cts is of Sri Lankan (Ceylon) origin, with no indications of heating. Report number CDC 2106307, dated June 29th 2021