The chemical composition of Sillimanite Cat’s Eye is Al2SiO5 Fibrolite and its hardness ratio on the Mohs scale is 6-7.
It is found in Myanmar (Burma), Sri Lanka (Ceylon), the U.S. (Idaho), Czechoslovakia, India, Italy, Germany, and Brazil.
Sillimanite Cat’s Eye is sometimes referred to as “fibrolite” because the crystals occur in groups, resembling fibers.
Specimens are not enhanced.
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