gemstone
Chrysoprase
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, vibrant apple-green to bluish-green color, waxy to vitreous luster, and microcrystalline structure.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, vibrant apple-green to bluish-green color, waxy to vitreous luster, and microcrystalline structure.
Formation & geological history
Forms in weathered, nickel-bearing serpentinites or laterites via low-temperature hydrothermal solutions precipitating silica.
Uses & applications
Widely used in high-end jewelry, carvings, cabochons, and as a collector's ornamental stone.
Geological facts
The green color is imparted by minute particles of nickel-bearing minerals. It was prized by the ancient Greeks, Romans, and Egyptians.
Field identification & locations
Identified by its distinctive apple-green hue, conchoidal fracture, and lack of cleavage; commonly sourced from Australia, Brazil, and Germany.
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