sedimentary
Red Jasper with Quartz
Silicon Dioxide (SiO2)
Hardness: 6.5-7 on Mohs scale; Color: Rusty red with white or milky patches; Luster: Dull to vitreous; Crystal Structure: Microcrystalline; Cleavage: None (Conchoidal fracture).
- Hardness
- 6
- Color
- Rusty red with white or milky patches
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Rusty red with white or milky patches; Luster: Dull to vitreous; Crystal Structure: Microcrystalline; Cleavage: None (Conchoidal fracture).
Formation & geological history
Formed from the deposition of silica from hydrothermal solutions or volcanic ash into sedimentary environments; the red color comes from iron inclusions (hematite).
Uses & applications
Used primarily in jewelry as cabochons, for lapidary work, decorative carvings, and as a healing stone in metaphysical communities.
Geological facts
Red Jasper has been used since antiquity for seal stones and amulets. It is often referred to as a 'stone of endurance' in folklore.
Field identification & locations
Identify by its opacity (jasper is opaque) and hardness—it should scratch glass but not be scratched by a steel pocket knife. Commonly found in riverbeds and desert environments.
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