Picture Jasper
Silicon dioxide (SiO2), microcrystalline quartz with iron/clay impurities
An opaque brown chalcedony whose iron-stained banding mimics deserts, dunes, and distant mountain skylines.
- Mohs hardness
- 6.5-7
- Color
- tan, brown, beige, cream with darker banding
- Type
- mineral
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Overview
Picture Jasper is an opaque variety of chalcedony (microcrystalline quartz) prized for natural markings that resemble landscapes: dunes, canyons, shorelines, and stormy skies. The "scenery" comes from iron oxides and fine clay or mud that infiltrated the silica as it formed.
Most commercial material comes from the western United States, especially Oregon and Idaho, where named deposits like Biggs and Owyhee produce particularly fine scenic patterns. Each cut slab is unique, which makes the stone a favorite for cabochons and display pieces.
Like all jaspers it is tough, takes a high polish, and is colorfast, making it durable enough for everyday jewelry.
Formation & geology
Picture Jasper forms when silica-rich groundwater or volcanic fluids precipitate into sediment, mud, or volcanic ash. As the silica gels and crystallizes into compact chalcedony, suspended iron oxides and clay particles settle in layers and swirls, producing the banded "landscape" imagery.
Many deposits are tied to ancient volcanic terrains where ash beds and silica solutions interacted over long periods. The classic Oregon and Idaho material is associated with Miocene volcanic and sedimentary rocks. Slow, layered deposition is key: rapid mixing would blur the fine horizons that make the scenes look like painted vistas.
How to identify it
Look for an opaque, fine-grained stone in earthy tans, browns, and creams with horizontal banding or dendritic swirls suggesting scenery. Hardness is 6.5-7, so it scratches glass and resists a steel knife. Luster is dull to waxy on rough surfaces and glassy when polished; the streak is white.
Distinguish it from petrified wood (which shows cell/grain structure) and from sedimentary mudstone (much softer, will scratch easily and may fizz or crumble). Picture Jasper has no cleavage and breaks with a conchoidal to splintery fracture. Unlike agate it is fully opaque rather than translucent.
Uses & significance
Picture Jasper is mainly a lapidary and jewelry stone, cut into cabochons, beads, and slabs that showcase the scenic banding. Collectors value slabs that frame a recognizable "landscape." It is also carved into small ornamental objects.
In metaphysical practice it is regarded as a grounding, nurturing "stone of the Earth" associated with stability and connection to nature, though these claims are not scientific. Its real value lies in its durability, fine polish, and the one-of-a-kind natural imagery in each piece.
Frequently asked questions
Why does Picture Jasper look like a landscape?
Iron oxides and clay settled in layers within the silica as it formed, creating natural horizons and swirls that resemble dunes, mountains, and skies.
Is Picture Jasper a real jasper?
Yes. It is an opaque, iron-rich variety of chalcedony (microcrystalline quartz), which is the standard definition of jasper.
How hard is Picture Jasper?
About 6.5-7 on the Mohs scale, hard enough to scratch glass and durable for rings, pendants, and beads.
Where does Picture Jasper come from?
Most fine material comes from Oregon and Idaho in the western United States, including named beds like Biggs and Owyhee.
Picture Jasper guides
In-depth guides for identifying, valuing, and understanding Picture Jasper.
Picture Jasper identified by the community
Real specimens identified with Rock Identifier.
