mineral
Bloodstone
Chalcedony (Variety of Quartz), SiO2 with inclusions
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7. Dark green color with characteristic red or brown spots of iron oxide. Vitreous to waxy luster with microcrystalline trigonal structure.
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Physical properties
Mohs hardness of 6.5 to 7. Dark green color with characteristic red or brown spots of iron oxide. Vitreous to waxy luster with microcrystalline trigonal structure.
Formation & geological history
Forms by deposition of silica-rich groundwater in cavities and fractures of rocks at low temperatures, often in hydrothermal or sedimentary environments.
Uses & applications
Commonly used in tumbled stones, signet rings, carvings, and lapidary arts due to its rich colors and durability.
Geological facts
Historically known as heliotrope, meaning "sun-turner," ancient cultures believed it could turn the sun red and offered magical healing powers.
Field identification & locations
Identified by its opaque dark green base and distinct red spots; found worldwide including India, Brazil, Australia, and the USA.
