Mineral/Sedimentary

Jasper

Silicon dioxide (SiO2)

Hardness: 6.5-7 (Mohs), Color: Brown with lighter tan/orange patterns, Luster: Vitreous to dull, Crystal structure: Microcrystalline quartz (Chalcedony), Cleavage: None

Hardness: 6

Identified June 17, 2026More mineral/sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Brown with lighter tan/orange patterns, Luster: Vitreous to dull, Crystal structure: Microcrystalline quartz (Chalcedony), Cleavage: None

Formation & geological history

Forms in sedimentary or volcanic environments where silica-rich fluids percolate through rocks, replacing original materials. The patterns are due to various mineral impurities (like iron oxides) included during formation.

Uses & applications

Commonly used in jewelry, lapidary arts, ornamental carving, and metaphysical practices.

Geological facts

Jasper comes in many distinct varieties named after their patterns or locations, such as Picture Jasper, Ocean Jasper, or in this case, a patterned brown jasper sometimes referred to as 'camouflage' or 'leopard skin' jasper depending on specific inclusions.

Field identification & locations

Identified by its opacity, hardness (scratches glass), and characteristic patterns. Often found in areas with past volcanic or hydrothermal activity. Great for beginner collectors due to its abundance and beauty.