sedimentary

Picture Jasper

Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Tan, brown, ochre, and black; Luster: Vitreous to waxy (when polished); Crystal Structure: Hexagonal (cryptocrystalline); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Tan, brown, ochre, and black
Luster: Vitreous to waxy (when polished)

Identified July 6, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Tan, brown, ochre, and black; Luster: Vitreous to waxy (when polished); Crystal Structure: Hexagonal (cryptocrystalline); Specific Gravity: 2.58-2.91

Formation & geological history

Formed from the petrification/silicification of volcanic ash or mud within sedimentary environments. The unique 'scenic' patterns are caused by iron oxides (limonite/hematite) and other mineral impurities that settle during the stone's formation over millions of years.

Uses & applications

Primarily used for lapidary work, jewelry (cabochons), interior decoration, and as metaphysical 'energy' stones.

Geological facts

Picture Jasper is often referred to as 'Earth's Mother' because it appears to contain landscape paintings of mountains and deserts. The most famous variety, Biggs Jasper, was discovered during road construction in Oregon in 1960.

Field identification & locations

Look for opaque, silicate stones with brown/tan 'banding' or 'scenic' patterns that do not transmit light. Found globally with major deposits in the Pacific Northwest of the USA (Oregon and Idaho).