gemstone
Heliotrope
Chalcedony (SiO2) with hematite and chlorite inclusions
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, dark green color with distinct red or brown spots, vitreous to waxy luster, and cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, dark green color with distinct red or brown spots, vitreous to waxy luster, and cryptocrystalline structure.
Formation & geological history
Formed by the deposition of silica-rich hydrothermal solutions in cavities and fractures of existing rocks, typically during low-temperature geological processes.
Uses & applications
Used primarily in lapidary arts for cabochons, carvings, signet rings, and as a semi-precious ornamental gemstone.
Geological facts
Historically known as bloodstone, it was believed by ancient civilizations to possess mystical healing powers and magical properties.
Field identification & locations
Easily identified by its dark green background mottled with red blood-like spots; commonly sourced from India, Brazil, and Australia.
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