sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, dull to greasy luster, opaque green color, and conchoidal fracture with no visible crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, dull to greasy luster, opaque green color, and conchoidal fracture with no 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 lapidary arts for making cabochons, beads, ornamental carvings, and low-cost jewelry.
Geological facts
Jasper has been used since ancient times for talismans and seals, prized for its durability and rich earthy colors.
Field identification & locations
Identified by its microcrystalline texture, lack of cleavage, and resistance to steel scratching; commonly found in riverbeds and mountainous regions worldwide.
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