Sedimentary/Mineral
Picture Jasper
SiO2
Hardness: 6.5-7 on Mohs scale. Color: Brown, tan, cream, with dark patterns. Luster: Vitreous to dull. Crystal structure: Microcrystalline quartz.
- Hardness
- 6
- Color
- Brown, tan, cream, with dark patterns
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6.5-7 on Mohs scale. Color: Brown, tan, cream, with dark patterns. Luster: Vitreous to dull. Crystal structure: Microcrystalline quartz.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary rocks, often creating picturesque landscapes or patterns due to impurities like iron oxide.
Uses & applications
Commonly used in lapidary, jewelry making, and as a decorative stone.
Geological facts
Picture jasper is highly valued by collectors for its natural 'landscape' patterns.
Field identification & locations
Identified by its distinctive scenic patterns and hardness. Notable sources include Owyhee Jasper from Oregon/Idaho.
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