mineral
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions
Hardness: 6.5-7 Mohs; Color: Clear to milky white with green moss-like inclusions; Luster: Vitreous to waxy; Structure: Triganol/Hexagonal (cryptocrystalline)
- Hardness
- 6
- Color
- Clear to milky white with green moss-like inclusions
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Clear to milky white with green moss-like inclusions; Luster: Vitreous to waxy; Structure: Triganol/Hexagonal (cryptocrystalline)
Formation & geological history
Formed in volcanic rocks or ancient lavas, where silica-rich groundwater fills cavities and precipitates over millions of years. The green inclusions are typically manganese or iron oxides.
Uses & applications
Used primarily in jewelry as beads and cabochons, as ornamental carvings, and widely collected by mineral enthusiasts.
Geological facts
Despite its name, moss agate does not contain organic plant matter; the moss effect is entirely mineral-based. It has been used as a talisman for gardeners and farmers for centuries.
Field identification & locations
Identify by its characteristic branching green dendrites within a translucent chalcedony matrix. Commonly found in India, Brazil, and the USA (Washington and Montana).
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