TOURMALINE CATS EYE 11.20 CTS – SRI LANKA LOOSE GEMSTONES – 19036

100% Natural – Not treated in any way.
Rare Colectors Gem.
Suitable for Museums,Institutions and Students of Gemology.
Beautiful sharp Catseye effect.
Among the Rarest of gemstones.

Chemical Comp: (NaCa)(LI,MgFe,Al)9B3Si6(O,OH)31
Density: 3.06 (.05, +.15)
Crystal Group: Hexagonal

Some Tourmalines contain tiny, parallel inclusions causing them to display a strong chatoyancy and are cut en-cabochon to cats-eyes which are rare- a collector’s gem. Tourmaline comes from the Singhalese (Sri Lankan) words ‘tura mali’ – gem with several colors. Tourmalines come in a variety of colors, some have two or more colors, some even color-changing.