sedimentary

Jasper Beads (Polished)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs), Color: Multicolored (brown, orange, green, grey), Luster: Vitreous to waxy, Crystal Structure: Microcrystalline (Trigonal), Cleavage: None, Specific Gravity: 2.58-2.91

Hardness: 6

Identified May 31, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Multicolored (brown, orange, green, grey), Luster: Vitreous to waxy, Crystal Structure: Microcrystalline (Trigonal), Cleavage: None, Specific Gravity: 2.58-2.91

Formation & geological history

Jasper is an opaque variety of chalcedony formed through the deposition of silica in groundwater. These specimens likely formed in volcanic or sedimentary environments where mineral impurities like iron oxides created the distinctive banding and colors.

Uses & applications

Primarily used for jewelry, lapidary arts, decorative beads, and as talismans or collectible mineral specimens.

Geological facts

Jasper has been a favorite gemstone throughout history; it is mentioned in the Bible and was frequently used by ancient civilizations for cylinder seals and amulets. The specific patterns in these beads are often referred to as 'Fancy Jasper' or 'Indian Jasper'.

Field identification & locations

Identify by its hardness (cannot be scratched by a steel blade), opaque nature, and smooth, waxy surface when polished. Commonly found in India, Brazil, and the USA. Collectors look for unique color transitions and banding patterns.