metamorphic
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
Hardness: 6-6.5; Color: Green with black inclusions; Luster: Vitreous to pearly; Crystal structure: Orthorhombic; Specific Gravity: 3.3
- Hardness
- 6-6
- Color
- Green with black inclusions
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-6.5; Color: Green with black inclusions; Luster: Vitreous to pearly; Crystal structure: Orthorhombic; Specific Gravity: 3.3
Formation & geological history
Formed during the regional metamorphism of basic igneous, sedimentary, and metamorphic rocks. Most notable deposits are from the Precambrian era.
Uses & applications
Primarily used for ornamental carvings, cabochons for jewelry, and as a popular collector specimen.
Geological facts
Also known as Anyolite, from the Maasai word for 'green'. While it often contains red rubies, specimens like this one mostly show the green zoisite matrix and black hornblende.
Field identification & locations
Identified by its distinctive pistachio-green color peppered with black hornblende spots. Commonly found in Tanzania. Collectors value pieces with vibrant contrast.
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