gemstone
Chrysoprase
Chalcedony (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, apple-green to dark green color, waxy to vitreous luster, and microcrystalline crystal structure with no cleavage.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, apple-green to dark green color, waxy to vitreous luster, and microcrystalline crystal structure with no cleavage.
Formation & geological history
Forms in low-temperature hydrothermal veins and weathering zones, typically as a secondary mineral in nickel-bearing serpentinites.
Uses & applications
Widely used in jewelry making for cabochons, beads, and ornamental carvings.
Geological facts
Its vibrant green color is caused by trace amounts of nickel compounds rather than chromium.
Field identification & locations
Identified by its distinctive apple-green color and waxy luster; commonly sourced from Australia, Germany, Poland, and the USA.
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