sedimentary
Green Jasper Pebble
Microcrystalline Quartz (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness: 6.5-7 on the Mohs scale, Color: Green with minor brownish veining, Luster: Waxy to dull, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None (exhibits conchoidal fracture), Specific Gravity: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 on the Mohs scale, Color: Green with minor brownish veining, Luster: Waxy to dull, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None (exhibits conchoidal fracture), Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the precipitation of silica-rich fluids in sedimentary environments or hydrothermal conditions, often over millions of years.
Uses & applications
Used for tumbling, lapidary arts, ornamental carving, and as a collector's specimen.
Geological facts
Green jasper gets its distinct color primarily from iron compounds, clay minerals, or other mineral impurities incorporated during its formation.
Field identification & locations
Found commonly in stream beds, gravel bars, and beaches where wave or river action has smoothed and rounded the stone. Identify by its high hardness (scratches glass) and smooth, opaque waxy texture.
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