sedimentary
Picture Jasper
Opaque Microcrystalline Quartz (SiO2)
Hardness: 6.5-7 Mohs; Color: Tan, brown, black, and beige; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Fracture: Conchoidal.
- Hardness
- 6
- Color
- Tan, brown, black, and beige
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Tan, brown, black, and beige; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Fracture: Conchoidal.
Formation & geological history
Formed from silica-rich hydrothermal fluids or volcanic ash that petrified over time, often featuring inclusions of iron oxides or dendrites which create 'landscape' patterns.
Uses & applications
Primarily used in lapidary arts, jewelry (cabochons and beads), and as ornamental display pieces or 'worry stones'.
Geological facts
Picture Jasper is often called 'the stone of global awareness' by metaphysical collectors. The patterns are so detailed they can resemble deserts, mountains, or forests.
Field identification & locations
Identify by its matte to semi-glossy tan surface and distinctive dark scenic lines. It is extensively found in the Owyhee mountain region of Idaho/Oregon, USA.
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