CERTIFIED CHRYSOBERYL CATS EYE 6.46 Cts NATURAL CEYLON LOOSE GEMSTONE 20618

  

CERTIFIED CHRYSOBERYL CATS EYE 6.46 Cts - 20618 BEAUTIFUL CATS EYE. 10.4 x 8.8 mm. 100% Natural - Not treated in any way. Beautiful Center-stone for an engagement Ring. 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.