Killer gem Corundum var. Sapphire crystal from Ratnapura, Sri Lanka. It displays 17mm single Sapphire crystal. It is complete all over 360 degree with irregular hexagonal shape.  The Sapphire is transparent and gem with rich blue color. It is very lustrous, glassy and light reflective. In superb condition. On acrylic base.
Breathtaking Sapphire!