mineral
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2) with inclusions of Iron Oxide/Hematite
Hardness: 6.5-7 on Mohs scale. Color: Dark green with blood-red spots. Luster: Vitreous to waxy. Crystal structure: Trigonal (microcrystalline). Specific gravity: 2.58-2.64.
- Hardness
- 6
- Color
- Dark green with blood-red spots
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale. Color: Dark green with blood-red spots. Luster: Vitreous to waxy. Crystal structure: Trigonal (microcrystalline). Specific gravity: 2.58-2.64.
Formation & geological history
Forms at shallow depths and low temperatures by precipitation from silica-rich groundwater in fractures and cavities of other rocks. It is most commonly found in primary deposits within volcanic rocks.
Uses & applications
Primarily used as a gemstone in jewelry (cabochons, beads, rings), as a decorative carving material, and among collectors of metaphysical stones.
Geological facts
In the Middle Ages, the red spots were believed to be the blood of Christ. It is one of the traditional birthstones for March and has been used since Babylonian times for engraved seals.
Field identification & locations
Identify in the field by its characteristic dark green opaque body and distinct red jasper inclusions. Common locations include India, Brazil, Australia, and the western United States.
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