metamorphic
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Corundum; Ca2Al3(SiO4)3(OH) + Al2O3
Hardness: 6-7 (zoisite) and 9 (ruby); Color: Green with black speckles (Tschermakite) and sometimes red/pink spots; Luster: Vitreous; Crystal System: Orthorhombic/Hexagonal; Specific Gravity: 3.2-3.5
- Hardness
- 6-7 (zoisite) and 9 (ruby)
- Luster
- Vitreous
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Physical properties
Hardness: 6-7 (zoisite) and 9 (ruby); Color: Green with black speckles (Tschermakite) and sometimes red/pink spots; Luster: Vitreous; Crystal System: Orthorhombic/Hexagonal; Specific Gravity: 3.2-3.5
Formation & geological history
Formed through the regional metamorphism of calcium-rich rocks. It is most notably found in the Mundarara Mine near Longido, Tanzania.
Uses & applications
Primarily used as an ornamental stone for carvings, beads, and cabochons. It is popular in the metaphysical and gemstone collecting communities.
Geological facts
The name 'Anyolite' is derived from the Maasai word 'anyoli', meaning green. It is unique because it combines a relatively soft matrix (zoisite) with one of the hardest known minerals (ruby).
Field identification & locations
Identify by its distinctive bright pistachio-green color contrasted with black amphibole (Tschermakite) inclusions. Unlike Ruby in Fuchsite, it does not have a blue kyanite ring around the rubies and is harder.
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