Untreated Burma Sapphire Ring, 14.76 Carats, $900,000 © M.S.Rau Antiques. 

A spectacular Burma sapphire positively glows in this impeccable ring. Displaying a natural azure hue, this exceptional cushion-shaped gem weighs an astounding 14.76 carats. Certified by both the Gubelin and AGL as being a natural, unenhanced Burma sapphire, the stunning jewel is one of the treasures of the world. Set in platinum with diamonds totaling 2.13 carats.