Mineral/Sedimentary

Jasper Pendant

Silicon dioxide (SiO2) with impurities

Hardness of 6.5-7 on the Mohs scale. Colors vary widely due to impurities (iron, clay, etc.), in this case, green and grayish/white. Opaque luster. Microcrystalline quartz structure.

Identified June 27, 2026More mineral/sedimentary →

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Physical properties

Hardness of 6.5-7 on the Mohs scale. Colors vary widely due to impurities (iron, clay, etc.), in this case, green and grayish/white. Opaque luster. Microcrystalline quartz structure.

Formation & geological history

Forms from the deposition of silica-rich sediments or volcanic ash in marine environments, followed by lithification over millions of years.

Uses & applications

Commonly used in lapidary arts, jewelry-making (like this carved heart pendant), and ornamental objects.

Geological facts

Jasper is a variety of chalcedony. The name means 'spotted or speckled stone'. It has been used for ornamentation since antiquity.

Field identification & locations

Identified by its hardness (scratches glass), opacity, and characteristic patterns. Found globally in sedimentary and volcanic deposits. Often collected by rockhounds and lapidary enthusiasts.

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