TIFFANY & CO., JEAN SCHLUMBERGER SAPPHIRE AND DIAMOND RING

TIFFANY & CO., JEAN SCHLUMBERGER SAPPHIRE AND DIAMOND RING Cushion mixed-cut sapphire of 10.21 carats, round diamonds, platinum, circa 1960, signed Tiffany Schlumberger, Made in France, maker's mark (Henri Picq) Gübelin, 2022, report no. 22032071: 10.21 carats, no indications of heating, with Information Sheet regarding the undeterminable origin of the sapphire and unheated sapphires AGL, 2022, report no. 1120817: 10.21 carats, no gemological evidence of heat Size/Dimensions: US ring size 5 1⁄4 Gross Weight: 9.3 grams