Ruby-Zoisite

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Ruby in zoisite is a translucent to opaque rock composed of ruby crystals, green zoisite and black hornblende. The official name for this gem is "anyolite," from the Masai word anyoli, meaning "green." This gem is usually used as an ornamental stone due to its stunning color contrasts.

Ruby-Zoisite Polished
Ruby-Zoisite Classification
Common Name Ruby-Zoisite
Species Rock
Ruby-Zoisite Optical Properties
Transparency Translucent - Opaque
Refractive Index 1.760-1.770
Polariscope Reaction Aggregate (AGG)
Fluorescence SWUV: Inert
LWUV: Inert
Pleochroism None
Ruby-Zoisite Characteristic Physical Properties
Specific Gravity 3.100-3.400
Inclusions Ruby areas might show hexagonal outline.
Luster Vitreous, Pearly
Fracture Uneven
Cleavage None
Ruby-Zoisite Chemistry & Crystallography
Chemical Name aluminum oxide and calcium aluminum silicate hydroxide
Chemical Formula Al2O3 and Ca2Al3(SiO4)3(OH)
Crystal System Trigonal
Chemistry Classification Silicate

Countries of Origin

Tanzania, United Republic Of; Unknown

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This page was created on June 27, 2014.

This page was last edited on October 24, 2019.