gemstone
Chrysoprase
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, apple-green to dark green color, waxy to vitreous luster, and microcrystalline trigonal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, apple-green to dark green color, waxy to vitreous luster, and microcrystalline trigonal structure.
Formation & geological history
Formed through the hydrothermal precipitation of silica in nickel-bearing serpentinites and weathered nickel ore bodies.
Uses & applications
Used primarily as a semi-precious gemstone in rings, pendants, beadwork, and ornamental carvings.
Geological facts
The vibrant green color comes from trace amounts of finely dispersed nickel compounds rather than chromium.
Field identification & locations
Identified by its distinctive apple-green color and conchoidal fracture; commonly found in Australia, Brazil, and California.
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