sedimentary

Picture Jasper

Silicon Dioxide (SiO2) - Opaque Chert/Quartzite variety

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Tan, cream, and brown with landscape-like patterns; Luster: Vitreous to dull; Crystal Structure: Microcrystalline/Cryptocrystalline (Hexagonal/Trigonal system); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Tan, cream, and brown with landscape-like patterns
Luster: Vitreous to dull

Identified March 11, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the petrification of mud, silica-rich sediments, and organic matter over millions of years. The distinctive 'picture' patterns are created by flow patterns, mineral crystallization, and impurity staining (mostly iron oxides) during the lithification process.

Uses & applications

Predominantly used for ornamental purposes including lapidary work, cabochons for jewelry, worry stones, and decorative carvings. It is a popular stone for metaphysical practitioners and mineral collectors.

Geological facts

Certain varieties like Owyhee, Biggs, and Deschutes jaspers are highly sought after for their realistic 'scenic' depictions of mountains or deserts. Each piece is unique, often described as 'nature's painting.'

Field identification & locations

Identify in the field by its high hardness (won't be scratched by a steel knife), smooth waxy texture when polished, and the characteristic tan/brown swirled patterns. Common locations include Oregon and Idaho (USA), South Africa, and Brazil.