CERTIFIED CHRYSOBERYL CATS EYE 6.46 Cts NATURAL CEYLON LOOSE GEMSTONE 20618

100% Natural – Not treated in any way.
Beautiful Center-stone for an engagement Ring.
Beautiful sharp Catseye effect.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
Chatoyancy is Cats Eye gems is best seen in Bright Sunlight or by focusing a flashlight on the face of the gem

Refractive Index: 1.741 – 1.760
Hardness: 8.5
Chemical Comp: BeAl2O4
Density: 3.73
Crystal Group: Orthorhombic

The Chrysoberyl cat’s eye is a miracle of Nature! This gem has a thin Bright Silver band of light on a shimmering golden background, and glides across the surface.
Fine inclusions in the stone are responsible for this phenomenon called chatoyancy. The incident light is reflected in such a way that that a bright strip of light appears running perpendicular to the inclusions.