sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Hardness: 6.5–7 (Mohs scale); Color: Tan, brown, and cream with dark veining; Luster: Vitreous to waxy; Crystal structure: Hexagonal (microcrystalline/cryptocrystalline); Specific Gravity: 2.58–2.91.

Hardness: 6
Color: Tan, brown, and cream with dark veining
Luster: Vitreous to waxy

Identified March 9, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the petrification of mud or volcanic ash in high-silica environments. Over time, impurities like iron and manganese seeped into the silica, creating the landscape-like patterns. Geological age varies by source, often millions of years old.

Uses & applications

Primarily used in jewelry (cabochons and pendants), ornamental carvings, stone therapy, and as metaphysical objects for meditation.

Geological facts

Picture jasper is famous for its 'hidden maps' or landscape scenes that look like deserts or mountains. A well-known variety is Biggs Jasper from Oregon, which features unique rhythmic banding.

Field identification & locations

Identify in the field by its opaque nature, smooth conchoidal fracture, and characteristic earth-tone banding. It is commonly found in desert regions of the Western USA (Oregon, Idaho), Africa, and Brazil. Collectors look for high-contrast patterns.

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