sedimentary
Red Jasper
Silicon Dioxide with Iron inclusions (SiO2)
Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Dull to vitreous; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Brick red to brownish-red
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Dull to vitreous; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91
Formation & geological history
Formed when microcrystalline quartz precipitates from silica-rich fluids in fissures or cavities. The red color is derived from high concentrations of iron oxide (hematite) during the sedimentation process.
Uses & applications
Used extensively for lapidary work, jewelry (cabochons and beads), ornamental items, and as a popular stone for chakra healing and crystal collecting.
Geological facts
Red Jasper has been used since ancient times for talismans and seal stones; it was often referred to as 'the stone of endurance' or 'warrior stone' in various cultures.
Field identification & locations
Identified in the field by its opaque red color, wax-like luster when wet, and inability to be scratched by a steel knife. Frequently found in riverbeds, desert washes, and gravel pits globally.
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