metamorphic
Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
Hardness: 6-9 (Zoisite 6.5, Ruby 9); Color: Green (Zoisite) with Magenta/Red (Ruby) inclusions and occasional Black Hornblende; Luster: Vitreous to pearly; Crystal structure: Orthorhombic and Hexagonal; Specific Gravity: 3.35
- Hardness
- 6-9 (Zoisite 6
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-9 (Zoisite 6.5, Ruby 9); Color: Green (Zoisite) with Magenta/Red (Ruby) inclusions and occasional Black Hornblende; Luster: Vitreous to pearly; Crystal structure: Orthorhombic and Hexagonal; Specific Gravity: 3.35
Formation & geological history
Metamorphic rock formed from the regional metamorphism of igneous rock. It is primarily found in Tanzania and is roughly 2 billion years old.
Uses & applications
Primarily used for ornamental carvings, cabochons for jewelry, and as a popular specimen for gemstone collectors and metaphysical practitioners.
Geological facts
It is named 'Anyolite' from the Masai word 'anyoli' meaning green. The vibrant contrast between the green and red makes it a unique decorative stone that is almost exclusively sourced from the Mundarara Mine in Tanzania.
Field identification & locations
Identify in the field by the distinct mottled green and magenta pattern; the ruby portions will often fluoresce under UV light. It is frequently tumbled or carved into shapes like the crescent moon shown.
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