mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, pale blue to lavender coloration, and a cryptocrystalline structure with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, pale blue to lavender coloration, and a cryptocrystalline structure with conchoidal fracture.
Formation & geological history
Formed in low-temperature hydrothermal veins and cavities within volcanic or sedimentary rocks through the deposition of silica-rich solutions.
Uses & applications
Widely used in gemstone jewelry, ornamental carvings, and appreciated by mineral collectors.
Geological facts
Chalcedony has been used since antiquity for intaglios and seals due to its toughness and fine grain.
Field identification & locations
Identified by its waxy luster, translucent blue color, and lack of visible crystal faces; commonly found globally in volcanic regions.
