Jasper

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Jasper

Minerals

Hardness: 6.5–7

Streak: White

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BasaltGraniteObsidianRhyolite

Parent: Rocks & Minerals

Jasper is an opaque, iron‑bearing variety of microcrystalline quartz (chalcedony); its rich reds, browns, and patterns come from mineral impurities and layered silica deposition.

Related: Quartz, Chalcedony, Agate, Puddingstone

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