6x4mm Natural Blue Sapphire 0.64 Carat Oval Cut Heated Corundum, Unmounted Gem Faceted Loose Gemstone, US seller

Natural Sapphire (Corundum)
Measurements: 6.0 x 4.1 mm, 2.8 mm deep
Weight: 0.64 carats
Color: Medium Blue
Cut: Oval
Clarity: Type II SI1-SI2; Slightly Included
Condition: Great!
Treatment(s): Heated
Origin: Madagascar