Sotheby's, Geneva, November 2002 Lot 66 Sapphire Ring 
Set with a sugarloaf sapphire weighing 29.20 carats, mounted in reeded 18 karat white gold, size 52.
Accompanied by GRS report no. 2001-03285 stating that "gemmological testing revealed characteristics corresponding to those of a natural sapphire of Burma, no indication of thermal treatment."
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