sedimentary

Picture Jasper (specifically Biggs or Deschutes variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Hardness: 6.5–7 (Mohs scale), Color: tan, brown, gold, and cream with landscape-like banding, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.58–2.91

Hardness: 6

Identified March 26, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the petrification of volcanic ash or mud sequences. Over millions of years (often Cenozoic age), silica-rich fluids permeated the sediment, capturing rhythmic banding and mineral patterns as it hardened into stone.

Uses & applications

Primarily used for lapidary arts, jewelry making (cabochons), and as a decorative display stone for collectors due to its scenic, 'picture' like appearance.

Geological facts

This specimen appears to be 'Biggs Jasper' or a similar variety from the Pacific Northwest, USA. It is famous for capturing 'scenic' images that resemble deserts, mountains, or rolling hills, created by high concentrations of iron oxides.

Field identification & locations

Identify by its opaque, smooth matte-to-glossy surface when wet or polished, and the unique swirling 'landscape' patterns. Commonly found in Oregon and Idaho, USA. Collectors look for high contrast and clear 'scenes' within the stone.

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