sedimentary
Green Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Hardness of 6.5 to 7 on the Mohs scale, predominantly green color with varying shades and subtle banding, vitreous to waxy luster, cryptocrystalline crystal structure, conchoidal fracture, specific gravity around 2.60 to 2.65.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, predominantly green color with varying shades and subtle banding, vitreous to waxy luster, cryptocrystalline crystal structure, conchoidal fracture, specific gravity around 2.60 to 2.65.
Formation & geological history
Formed via the precipitation of silica from water, often in marine environments or hydrothermal settings, frequently replacing organic material or filling cavities in volcanic rocks. Geological age varies widely depending on the specific deposit.
Uses & applications
Used primarily in lapidary arts, tumbled stones, ornamental carvings, and jewelry making.
Geological facts
Jasper has been used since ancient times for amulets, seals, and tools. Green varieties are often associated with emotional balance and grounding in crystal healing traditions.
Field identification & locations
Can be identified by its opaque nature, hardness that easily scratches glass, and smooth waxy feel when tumbled or polished. Found globally in regions with ancient sedimentary or volcanic activity.
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