Jasper or Agate

Mineral

Jasper or Agate

Silicon dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness 6.5-7, multicolored (green, brown, gray), waxy luster, microcrystalline quartz

Identified June 17, 2026More mineral →

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Physical properties

Hardness 6.5-7, multicolored (green, brown, gray), waxy luster, microcrystalline quartz

Formation & geological history

Formed from silica-rich fluids filling cavities in volcanic or sedimentary rocks

Uses & applications

Commonly used in jewelry, lapidary arts, and as a decorative stone

Geological facts

Jasper is an opaque variety of chalcedony, often featuring complex patterns due to mineral impurities.

Field identification & locations

Identifiable by its hardness, opacity, and intricate banding or patterns. Common worldwide.

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Gneiss or Schist (Gneiss or Mica Schist with Garnet) — Metamorphic

Gneiss or Schist

Gneiss or Mica Schist with Garnet

Metamorphic

Limonite

FeO(OH)•nH2O

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Limonite

FeO(OH)•nH2O

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Limonite

FeO(OH)•nH2O

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