mineral

Picture Jasper

SiO2, Microcrystalline Quartz

Hardness of 6.5 to 7 on the Mohs scale, opaque, mostly reddish brown with lighter and darker bands, vitreous to dull luster, cryptocrystalline structure

Identified June 18, 2026More mineral →

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, opaque, mostly reddish brown with lighter and darker bands, vitreous to dull luster, cryptocrystalline structure

Formation & geological history

Formed from silica-rich fluids that percolate through cracks in volcanic ash or other rock, often containing impurities like iron oxides which give it its colors

Uses & applications

Commonly used in lapidary arts for cabochons, carved ornaments, and jewelry making due to its patterns.

Geological facts

Jasper is an aggregate of microquartz and/or chalcedony. 'Picture jaspers' exhibit patterns that resemble landscapes or scenes.

Field identification & locations

Identify by its opacity, hardness (can scratch glass), and distinctive banding or landscape-like patterns. Common in regions with high volcanic activity and silica deposits.