metamorphic
Ruby Zoisite
Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)
Hardness: 6-7 (Zoisite) and 9 (Ruby); Color: Green with black and red spots; Luster: Vitreous to pearly; Crystal structure: Orthorhombic/Trigonal; Specific gravity: 3.35
- Hardness
- 6-7 (Zoisite) and 9 (Ruby)
- Color
- Green with black and red spots
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-7 (Zoisite) and 9 (Ruby); Color: Green with black and red spots; Luster: Vitreous to pearly; Crystal structure: Orthorhombic/Trigonal; Specific gravity: 3.35
Formation & geological history
Formed through the regional metamorphism of igneous and sedimentary rocks under high pressure and temperature. Found primarily in Tanzania.
Uses & applications
Used widely for ornamental carvings, polished cabochons, jewelry, and as a popular specimen for metaphysical collectors.
Geological facts
Also known as Anyolite, a name derived from the Maasai word for green. It is a natural combination of green zoisite, red ruby (corundum), and black tschermakite.
Field identification & locations
Identify by its unique green, red, and black mottled appearance. It is distinct because the ruby inclusions are often opaque and surrounded by black pargasite borders.
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