sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5-7 on the Mohs scale, opaque green coloration due to iron impurities, waxy to dull luster, cryptocrystalline structure with no visible crystal faces, conchoidal fracture, specific gravity of 2.58-2.91.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque green coloration due to iron impurities, waxy to dull luster, cryptocrystalline structure with no visible crystal faces, conchoidal fracture, specific gravity of 2.58-2.91.
Formation & geological history
Formed through the deposition of silica-rich fluids in sedimentary environments or hydrothermal veins, often replacing existing carbonate rocks, dating across various geological periods.
Uses & applications
Used primarily in lapidary arts, ornamental carvings, cabochons for jewelry, and as a collector mineral.
Geological facts
Green jasper has been used since ancient times for amulets, seals, and tools, and is often associated with grounding and balancing energy in metaphysical practices.
Field identification & locations
Can be identified by its hardness, lack of cleavage, waxy luster, and opaque green color. Commonly found in riverbeds, glacial tills, and areas with ancient hydrothermal activity worldwide.
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