I just found a very huge cushion-shaped sapphire, Burma (Mogok, Pain Pyit) origin, weighed 65.17 carats in Christie’s Dubai auction results last April 2010.
The un-heated huge blue Mogok sapphire was certified by the GRS Research Swiss Lab for the origin and no treatment. Rarely, we can find un-heated Burmese sapphire in this size. I consider it priceless.
However, the auction ended with $164,500 from the estimate price of $45,000-$55,000. Actually it was the auction price for a blue sapphire, diamond, and emerald ring designed by Manuel Bouvier.
