Product details
100% Natural – Not treated in any way.
Rare Collectors Gem
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Pendent accented with Diamonds.
Beautiful sharp Catseye effect.
Ideal for Designer Jewelry
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
Among the Rarest of gemstones.
Chatoyancy is Cats Eye gems is best seen in Bright Sunlight or by focusing a flashlight on the face of the gem
Refractive Index: 1.577(+-.016), 1.583 (+-.017)
Hardness: 7.5
Chemical Comp: Be3Al2 (SiO3)6
Density: 2.67-2.745
Crystal Group: Hexagonal
Some Beryls display chatoyancy and are cut en-cabochon to Cats-eyes, and are a collector’s gem. Beryl’s are beryllium-aluminium-silicates. As pure beryl, they are colourless, but coloration is derived from impurities – into green, yellow, pink or blue. Iron colours beryl into Blue- the most beautiful sea-blue Aquamarine.
Traces of iron, and minerals containing uranium, give a colorless beryl an Intense yellow tone – the Golden beryl.
 
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