sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs scale), Color: Mustard yellow to golden brown, Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Specific gravity: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Mustard yellow to golden brown, Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Specific gravity: 2.58-2.91
Formation & geological history
Formed through the accumulation of silica-rich fluids in volcanic or sedimentary environments, often associated with hydrothermal activity. Its color comes from iron silicate and goethite inclusions.
Uses & applications
Used primarily in jewelry (beads, cabochons), ornamental carvings, as a healing crystal, and as an industrial abrasive in some contexts.
Geological facts
Yellow Jasper was historically used as a stone of protection and was often referred to as a 'rain bringer.' It is a dense, opaque variety of chalcedony.
Field identification & locations
Identify by its waxy luster, conchoidal fracture, and opacity. Commonly found in riverbeds, desert environments, and volcanic deposits. Significant sources include India, Egypt, and the USA.
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