sedimentary
Green Jasper on Host Rock
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7; deep green color with a waxy to dull luster; cryptocrystalline structure with conchoidal fracture.
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Physical properties
Mohs hardness of 6.5 to 7; deep green color with a waxy to dull luster; cryptocrystalline structure with conchoidal fracture.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or chemical precipitation in marine sedimentary environments.
Uses & applications
Used primarily in lapidary arts, ornamental carvings, cabochons, and as a mineral specimen for collectors.
Geological facts
Jasper has been used since antiquity for talismans, seals, and weaponry. The green variety often derives its color from iron-bearing minerals or chromium inclusions.
Field identification & locations
Easily identified by its hardness, lack of cleavage, and smooth waxy polish. Commonly found in hydrothermal veins and alluvial gravel deposits.
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