Anyolite

Anyolite
Anyolite is a very colorful rock composed mainly of zoisite. It is also known as "ruby in zoisite" because it is composed of green zoisite with bright red ruby crystals, sometimes accompanied by black crystals of the hornblende tschermakite. It is used to produce cabochons, tumbled stones, small sculptures and ornamental objects. Nice pieces of rough material are also sold as specimens.

A material with a similar appearance, "ruby in fuchsite" is often misidentified as ruby in zoisite. Careful testing can easily differentiate these materials because the green fuchsite has a hardness of only 2 to 3, while the green zoisite has a hardness of at least 6. In addition, most specimens of ruby in fuchsite exhibit blue kyanite alteration rims around the ruby crystals, and this does not occur around ruby crystals in zoisite. Clinozoisite: Two views of the same crystal of clinozoisite from the Haramosh Mountains of Pakistan. The specimen is about 3.2 centimeters tall. Specimen and photo by Arkenstone / www.iRocks.com.

Clinozoisite
Gem-quality crystals of clinozoisite are sometimes cut into faceted stones. It is considered to be a "collectors" stone because it is rarely seen in jewelry.

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Physical Properties of Zoisite and Clinozoisite

 * Zoisite
 * Clinozoisite
 * Chemical Classification
 * Silicate
 * Silicate
 * Color
 * Colorless, gray, yellow, brown, pink, green, blue, and violet
 * Usually gray, yellow, green, or pink
 * Streak
 * White
 * White
 * Luster
 * Vitreous to granular, sugary
 * Vitreous to granular, sugary
 * Diaphaneity
 * Translucent to transparent
 * Translucent to transparent
 * Cleavage
 * Perfect in one direction
 * Perfect in one direction
 * Mohs Hardness
 * 6.5
 * 6.5
 * Specific Gravity
 * 3.2 to 3.4
 * 3.2 to 3.4
 * Diagnostic Properties
 * Hardness, specific gravity, striated crystals
 * Hardness, specific gravity, striated crystals
 * Chemical Composition
 * Ca2Al3(SiO4)(Si2O7)O(OH)
 * Ca2Al3(SiO4)(Si2O7)O(OH)
 * Crystal System
 * Orthorhombic
 * Monoclinic
 * Uses
 * Gemstones (tanzanite, anyolite, and thulite) and small sculptures
 * Gemstones
 * }
 * Hardness, specific gravity, striated crystals
 * Chemical Composition
 * Ca2Al3(SiO4)(Si2O7)O(OH)
 * Ca2Al3(SiO4)(Si2O7)O(OH)
 * Crystal System
 * Orthorhombic
 * Monoclinic
 * Uses
 * Gemstones (tanzanite, anyolite, and thulite) and small sculptures
 * Gemstones
 * }
 * Gemstones (tanzanite, anyolite, and thulite) and small sculptures
 * Gemstones
 * }