sedimentary

Jasper (specifically Picture Jasper or Landscape Jasper)

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Earthy tones of tan, yellow, and brown; Luster: Vitreous to waxy; Crystal structure: Hexagonal (cryptocrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Earthy tones of tan, yellow, and brown
Luster: Vitreous to waxy

Identified March 26, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine-grained sediments during the Cenozoic era. The distinct 'landscape' patterns are caused by the flow of mineral-rich water (iron and manganese) during the stone's petrifaction.

Uses & applications

Primarily used in jewelry for cabochons, beads, and rings; also used for decorative ornaments, mosaics, and as a collector's gemstone due to its unique patterns.

Geological facts

Picture Jasper is often referred to as 'Nature's Canvas' because its dendritic and banded patterns frequently resemble miniature landscapes, mountains, or desert scenes. It has been used since ancient times for talismans and seals.

Field identification & locations

Identify in the field by its opacity (it will not let light through even at the edges), smooth waxy feel when polished, and high hardness (it can scratch glass). Commonly found in regions with historical volcanic activity, such as Oregon (USA), South Africa, and Brazil.