sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

AI-generated identification · may be incorrect

Hardness: 6.5–7 on Mohs scale; Color: Beige, tan, brown with dark dendritic or line patterns; Luster: Dull to waxy; Crystal structure: Microcrystalline/Cryptocrystalline (Trigonal); Cleavage: None; Specific Gravity: 2.58–2.91

Hardness: 6
Color: Beige, tan, brown with dark dendritic or line patterns
Luster: Dull to waxy

Identified March 27, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed as a result of silicate-rich fluids petrifying mud or volcanic ash. The unique 'scenery' patterns are created by trapped iron oxide and mineral flow patterns during petrification. Examples range from the Cenozoic era to much older.

Uses & applications

Primarily used in jewelry making for cabochons and pendants, lapidary art, and as decorative pocket stones or keychains.

Geological facts

Many of the world's finest specimens of Picture Jasper, such as 'Biggs Jasper' and 'Deschutes Jasper,' are found in the Pacific Northwest of the United States. It is often described as 'nature's painting' because the patterns can resemble landscapes.

Field identification & locations

Identify in the field by its opaque nature, high hardness (cannot be scratched by a steel knife), and characteristic landscape-like branching patterns. Common locations include Oregon and Idaho (USA), South Africa, and Brazil.