mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, microcrystalline quartz structure, 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 quartz structure, specific gravity around 2.60.
Formation & geological history
Forms in low-temperature hydrothermal environments and cavities in volcanic rocks through the deposition of silica-rich fluids.
Uses & applications
Popularly used in gemstone jewelry, decorative carvings, and mineral collections.
Geological facts
Chalcedony has been used since antiquity for intaglios and seals due to its fine grain and durability.
Field identification & locations
Identified by its waxy luster, conchoidal fracture, and translucent light-blue coloration; commonly found worldwide including Turkey, USA, and India.
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