mineral

Green Moss Agate

Agate (Silicon Dioxide, SiO2) with inclusions

AI-generated identification · may be incorrect

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

Identified July 4, 2026More mineral →

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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).