Lot 286. Highly Important Platinum, 9.57 carats Kashmir Sapphire and Diamond Ring, J.E. Caldwell. Estimate 500,000 — 700,000 USD. Photo: Sotheby's.

Centering a cushion-cut sapphire weighing 9.57 carats, flanked by two kite-shaped diamonds weighing approximately .50 carat, size 4, signed JEC & Co, numbered R5954

Accompanied by AGL report no. CS 1073197 stating that the sapphire is of Kashmir origin, with no indications of heating.

Accompanied by Gübelin report no. 16030065 stating that the sapphire is of Kashmir origin, with no indications of heating.

Sotheby's. Magnificent Jewels: Starring the Shirley Temple Blue Diamond, New York, 19 avr. 2016, 02:00 PM