mineral

Moss Agate Geode Sphere

Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions

Hardness: 6.5-7.0 (Mohs scale); Color: Clear to white with green, dendritic moss-like inclusions; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline)

Hardness: 6
Color: Clear to white with green, dendritic moss-like inclusions
Luster: Vitreous to waxy

Identified May 17, 2026More mineral →

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Physical properties

Hardness: 6.5-7.0 (Mohs scale); Color: Clear to white with green, dendritic moss-like inclusions; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline)

Formation & geological history

Formed via the deposition of silica from groundwater into cavities (vugs) in volcanic rocks; the 'moss' inclusions are dendritic minerals that grew before the silica solidified.

Uses & applications

Primarily used for lapidary arts, jewelry, meditation 'crystal' work, and as decorative collector specimens.

Geological facts

Unlike true moss, the patterns are solely mineral-based inclusions and not botanical. It is often called the 'Mocha Stone' in older geological literature.

Field identification & locations

Identify by the characteristic 'botanical' green patterns encased in translucent chalcedony. Common in India, Brazil, and the USA (notably Montana and Oregon). Look for druzy quartz crystals inside open pockets.

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