sedimentary
Green Jasper
Microcrystalline quartz, SiO2 with impurities
AI-generated identification · may be incorrectHardness 6.5 to 7 on the Mohs scale, dark green color with mottled patterns, waxy to vitreous luster, cryptocrystalline structure.
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Physical properties
Hardness 6.5 to 7 on the Mohs scale, dark green color with mottled patterns, waxy to vitreous luster, cryptocrystalline structure.
Formation & geological history
Formed by the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often over millions of years.
Uses & applications
Used primarily for ornamental carvings, cabochons, polished decorative stones, and lapidary art.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components by various civilizations.
Field identification & locations
Identify by its conchoidal fracture, lack of visible crystal grains, and high resistance to scratching; commonly found in riverbeds and mountainous regions.
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