Color Change Sapphire and Diamond Pendant

The oval sapphire of violetish blue and purple changing to reddish purple, weighing 11.79 carats, surmounted by single round diamond, mounted in 14 karat gold, suspended from a 14 karat gold chain, length 17½ inches.

Accompanied by GIA report no. 11867737 stating natural sapphire, with comments stating that the stone exhibits a color change when viewed under daylight or fluorescent vs. incandescent light. No evidence of heat treatment.