Color Change Natural Sapphire 5x5.7mm 0.66 Carat - Purple to Green Gemstone - Fat Pear Tear Drop Corundum Faceted Loose Unmounted

Gemstone Type: Natural Sapphire (Corundum)
Measurements: 5.1 x 5.7 mm, 2.5 mm deep
Weight: 0.66 carats
Color: Changes from Dark Green- Purple under warmer lighting to Dark Bluish Green under cooler lighting.
Cut: Fat Pear
Clarity: Type II VS
Treatment(s): Possibly unheated or low heat
Condition: Great!