gemstone
Green Chalcedony
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, microcrystalline crystal structure, and specific gravity around 2.60.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, microcrystalline crystal structure, and specific gravity around 2.60.
Formation & geological history
Formed through the deposition of silica-rich groundwater within cavities of volcanic or sedimentary rocks at low temperatures.
Uses & applications
Widely used in jewelry, ornamental carvings, and gemstone collecting.
Geological facts
Green varieties are often naturally colored by trace amounts of nickel or chromium, and tumbled specimens like this are popular for metaphysical uses.
Field identification & locations
Identified by its waxy luster, lack of cleavage, and conchoidal fracture. Commonly found globally, including Brazil, India, and the USA.
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