sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque green color, waxy to dull luster, and conchoidal fracture without visible crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque green color, waxy to dull luster, and conchoidal fracture without visible crystal structure.
Formation & geological history
Forms from the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, lapidary art, and geological specimen collecting.
Geological facts
Green jasper is a variety of chalcedony that gets its distinct green hue primarily from iron impurities or chromium.
Field identification & locations
Found globally in riverbeds and mountainous regions, easily identified by its hardness, smooth tumbled texture, and lack of cleavage.
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