This incredibly rare color-change natural sapphire, weighing 21.31 carats, exhibits a brilliant blue color outdoors, and a sensual purplish-blue when viewed under incandescent light. Total weight of 2.56 carats of white diamonds are set in this fine platinum mounting. Mounting engraved Hamilton. The sapphire is certified by the AGTA to be all-natural and violetish blue in color.
One-of-a-kind.