mineral
Heliotrope
Chalcedony (SiO2) with Jasper/Hematite inclusions
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, dark green color with distinct red or brown spots, and a waxy to vitreous luster. It features a microcrystalline crystal structure and conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, dark green color with distinct red or brown spots, and a waxy to vitreous luster. It features a microcrystalline crystal structure and conchoidal fracture.
Formation & geological history
Forms by the deposition of silica from hydrothermal solutions or groundwater in cavities of rocks, typically occurring globally in sedimentary and volcanic environments.
Uses & applications
Used primarily in lapidary arts, signet rings, carvings, and as a popular ornamental gemstone for collectors.
Geological facts
Historically known as bloodstone, ancient cultures believed it possessed magical healing powers and could stop hemorrhages. The red spots are traditionally attributed to drops of Christ's blood in Christian lore.
Field identification & locations
Identified by its opaque dark green matrix dotted with red jasper inclusions. Commonly found in India, Brazil, Australia, and the USA.
