sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5 to 7 on the Mohs scale, dull to waxy luster, opaque green color, trigonal crystal system with cryptocrystalline structure, specific gravity of 2.58 to 2.91, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, dull to waxy luster, opaque green color, trigonal crystal system with cryptocrystalline structure, specific gravity of 2.58 to 2.91, and conchoidal fracture.
Formation & geological history
Formed through the deposition of silica-rich fluids in sedimentary environments or hydrothermal veins, often replacing existing carbonate rocks over millions of years.
Uses & applications
Used primarily in lapidary arts, making cabochons, beads, ornamental carvings, and jewelry.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry. Green varieties are often associated with balancing energy and grounding.
Field identification & locations
Found worldwide in riverbeds and mountainous regions. Identified by its lack of cleavage, hardness, waxy luster, and opaque green coloration, often shaped into tumbled stones by natural water action or rock tumblers.
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