sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Hardness: 6.5-7 (Mohs), Color: Red, earthy brown, rusty, Luster: Dull to waxy when raw, Crystal Structure: Microcrystalline/Trigonal, Cleavage: None, Specific Gravity: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs), Color: Red, earthy brown, rusty, Luster: Dull to waxy when raw, Crystal Structure: Microcrystalline/Trigonal, Cleavage: None, Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the deposition of silica from water found in crack filling, volcanic environments, or sedimentary basins. Its red color is derived from high iron content.
Uses & applications
Used for lapidary work, jewelry, ornamental carvings, and as a meditative or collector stone.
Geological facts
Red Jasper is a variety of chalcedony. It has been used for centuries across many cultures for protective amulets and is often called the 'Stone of Endurance.'
Field identification & locations
Identify by its deep red color, quartz-like hardness (it can scratch glass), and opaque nature even when held to light. Found in riverbeds and desert environments worldwide.
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