Lot 338. Important platinum, 10.40 carats sapphire and diamond ring, Cartier. Estimate $500,000–700,000. Photo Sotheby's
Centering a sugarloaf cabochon sapphire weighing 10.40 carats, flanked by triangle-shaped diamonds weighing approximately 1.95 carats, size 6¾, signed Cartier, numbered R2603, with workshop mark..
Accompanied by AGL report no. CS 1075990 stating that the sapphire is of Kashmir origin, with no indications of heating.
Accompanied by Gübelin report no. 16075090 stating that the sapphire is of Kashmir origin, with no indications of heating. Together with an information sheet from Gübelin on unheated sapphires.