Two Color-shift SapphiresTwo Color-shift SapphiresSongea, TanzaniaTwo pear-shaped sapphires which exhibit a color-shift depending on whether viewed under incandescent or fluorescent light, one changing from bluish-green to grey, weighing approximately 1.35 carats and measuring 7.99 x 5.53 x 3.83mm, with another one changing from olive green to grey-green, weighing 1.27 carats and measuring 7.60 x 5.46 x 3.93mm. (2) None