Lot 499. Magnificent 30.23 carats Kashmir  sapphire and diamond brooch, Cartier. Estimation 3,410,000 — 5,850,000 CHF. Lot sold 5,738,000 CHF. Photo Sotheby's. 

Set with a cushion-shaped sapphire weighing 30.23 carats, amongst pear- and marquise-shaped diamonds weighing a total of approximately 42.35 carats, signed Cartier, numbered, French assay and partial maker's marks, case stamped Cartier.

Accompanied by SSEF report no. 78415 and Gübelin report no. 15030026, stating that the sapphire is of Kashmir origin, with no indications of heating, together with appendix letters.

Additionally accompanied by twelve GIA reports:
no. 11476028, dated 23 March 2001, stating that the 5.03 carat marquise brilliant diamond is D Colour, Internally Flawless
no. 10486966, dated 6 November 1998, stating that the 4.35 carat pear brilliant diamond is D Colour, Internally Flawless
no. 10324842, dated 16 March 1998, stating that the 3.55 carat pear brilliant diamond is E Colour, VS1 Clarity
no. 11761361, dated 12 November 2001, stating that the 3.31 carat pear brilliant diamond is D Colour, Internally Flawless
no. 11744459, dated 24 October 2001, stating that the 3.24 carat marquise brilliant diamond is D Colour, Internally Flawless
no. 11741378, dated 11 October 2001, stating that the 3.23 carat pear brilliant diamond is D Colour, Internally Flawless 
no. 11013859, dated 12 January 2000, stating that the 3.05 carat pear brilliant diamond is D Colour, Internally Flawless 
no. 11494199, dated 27 March 2001, stating that the 3.01 carat pear brilliant diamond is D Colour, VVS1 Clarity
no. 11013878, dated 14 February 2000, stating that the 2.64 carat marquise brilliant diamond is D Colour, Internally Flawless 
no. 11112556, dated 12 June 2000, stating that the 2.38 carat pear brilliant diamond is D Colour, Internally Flawless
no. 11638568, dated 23 July 2001, stating that the 2.21 carat pear brilliant diamond is E Colour, VVS2 Clarity
no. 11456080, dated 6 March 2001, stating that the 2.07 carat pear brilliant diamond is D Colour, Internally Flawless