sedimentary
Red Jasper
CHERT (SiO2) with Hematite impurities
Hardness: 6.5-7 Mohs; Color: Opaque red/terracotta; Luster: Vitreous to dull; Crystal structure: Trigonal (Microcrystalline quartz)
- Hardness
- 6
- Color
- Opaque red/terracotta
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6.5-7 Mohs; Color: Opaque red/terracotta; Luster: Vitreous to dull; Crystal structure: Trigonal (Microcrystalline quartz)
Formation & geological history
Forms when silica-rich fluids permeate sedimentary or volcanic rocks, depositing microcrystalline quartz. Red color is due to iron (hematite) inclusions.
Uses & applications
Used extensively as a gemstone in necklaces, bracelets, and ornamental carvings. Also used as a healing stone in metaphysical communities.
Geological facts
Red Jasper was known as the 'warrior's stone' in ancient times and was often used to adorn the hilts of swords and amulets for protection.
Field identification & locations
Identified by its waxy luster on fractured surfaces and its inability to be scratched by a steel knife. Commonly found in riverbeds and as nodules in volcanic landscapes.
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