metamorphic

Zoisite with Ruby (Anyolite)

Anyolite (Calcium aluminium silicate hydroxide with Corundum)

AI-generated identification · may be incorrect

Hardness: 6-6.5 (Zoisite) to 9 (Ruby); Color: Bright green with black and dark red inclusions; Luster: Vitreous to pearly; Crystal structure: Orthorhombic and Hexagonal

Hardness: 6-6
Color: Bright green with black and dark red inclusions
Luster: Vitreous to pearly

Identified July 4, 2026More metamorphic →

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Physical properties

Hardness: 6-6.5 (Zoisite) to 9 (Ruby); Color: Bright green with black and dark red inclusions; Luster: Vitreous to pearly; Crystal structure: Orthorhombic and Hexagonal

Formation & geological history

Formed via regional metamorphism of magnesium-rich and calcium-rich rocks. Most specimens are from Proterozoic aged deposits in Tanzania.

Uses & applications

Used primarily in jewelry as cabochons, ornamental carvings, and as a popular collector specimen.

Geological facts

The name 'Anyolite' is derived from the Maasai word 'anyoli', meaning green. It is unique for containing large, non-gem quality ruby crystals embedded in green zoisite.

Field identification & locations

Identify by the distinct contrast of bright green zoisite, black pargasite inclusions, and dark red/magenta ruby spots. It is almost exclusively found in Tanzania.