SILIMANITE CATS EYE 2.87 Cts OVAL SHAPE NATURAL CEYLON LOOSE GEMSTONE 20577

  
SILIMANITE CATS EYE 2.87 Cts OVAL 20577 RARE COLLECTORS GEM. 9.8 x 5.15 mm.

100% Natural - Not treated in any way. Rare Collectors Gem Suitable for Museums, Institutions and Students of Gemology. Will make a Gorgeous Ring or Pendent accented with Diamonds. Large Sizes are Extremely Rare!

Chatoyancy is Cats Eye gems is best seen in Bright Sunlight or by focusing a flashlight on the face of the gem Among the Rarest of gemstones. Hardness: 6 - 7.5 Chemical Comp: Al2OSiO4 Density: 3.25 Crystal Group: Orthorhombic Sillimanite Cats-eyes also called Fibrolite, comes in a range of colors from brown yellow to green, or colorless, and cuts beautiful Cats-eyes. Some chatoyant gems display a razor-sharp silver ray and are most attractive. The finer qualities are rare and much sought after by collectors and connoisseurs alike.