sedimentary
Red Jasper
Red Jasper (SiO2)
Hardness: 6.5-7 (Mohs scale), Color: Rich brick-red to brownish-red due to iron inclusions, Luster: Vitreous when polished, Crystal Structure: Hexagonal/Microcrystalline, Cleavage: None, Specific Gravity: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Rich brick-red to brownish-red due to iron inclusions, Luster: Vitreous when polished, Crystal Structure: Hexagonal/Microcrystalline, Cleavage: None, Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the deposition of silica from hydrothermal solutions or volcanic ash in sedimentary environments where iron oxides are present to provide the characteristic color. Frequently found in ancient metamorphic or sedimentary rock beds.
Uses & applications
Extensively used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a popular stone for chakra balancing and meditation practices.
Geological facts
Red Jasper has been used by diverse cultures for millennia; ancient Egyptians used it in amulets for protection, and it is mentioned in the Bible as a stone on the High Priest's breastplate.
Field identification & locations
Identify in the field by its deep red color, dull/earthy raw texture vs a waxy/vitreous polished finish, and its inability to be scratched by steel. Commonly found in South Africa, Brazil, India, and the USA.
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