This gemstone is a stunning 4.02-carat natural unheated blue sapphire, accompanied by a GIA report for authentication. The sapphire is elegantly shaped into a cushion cut, with precise measurements of 9.73 x 7.38 x 5.50 mm. It exhibits a rich blue color, enhanced by a modified brilliant/step cut that maximizes its brilliance and depth. Originating from Sri Lanka, this sapphire is unheated, preserving its natural beauty and making it an exceptional and valuable gemstone.