sedimentary
Green Jasper
Silicon Dioxide (SiO2) with impurities
Hardness: 6.5-7 (Mohs); Color: Deep green with possible minor inclusions; Luster: Vitreous to waxy (when polished); Crystal Structure: Microcrystalline; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Deep green with possible minor inclusions
- Luster
- Vitreous to waxy (when polished)
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Deep green with possible minor inclusions; Luster: Vitreous to waxy (when polished); Crystal Structure: Microcrystalline; Specific Gravity: 2.58-2.91
Formation & geological history
Formed when silica-rich fluids permeate volcanic or sedimentary rocks, often originating in hydrothermal environments or via metamorphic transformation of chert.
Uses & applications
Used primarily for ornamental jewelry, lapidary arts, cabochons, and as a healing stone in metaphysical practices.
Geological facts
Green Jasper was highly prized in the ancient world for its color; it was often referred to as 'rain-bringer' in various cultures and used in cylinder seals.
Field identification & locations
Identified by its opaque nature, high hardness (cannot be scratched by a steel knife), and smooth, waxy feel when polished. Commonly found in Brazil, India, and Australia.
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