mineral

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Hardness: 6.5-7 on Mohs scale. Color: Brick red to brownish-red. Luster: Vitreous to dull. Crystal structure: Trigonal (microcrystalline/cryptocrystalline). Cleavage: None, conchoidal fracture. Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Brick red to brownish-red
Luster: Vitreous to dull

Identified July 4, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the infiltration of silica-rich fluids into sediment or volcanic ash. The red color is caused by high iron (hematite) content. It can be found in various geological ages, often in hydrothermal veins or sedimentary deposits.

Uses & applications

Used primarily as a gemstone for jewelry, lapidary work (cabochons), interior decoration, and as a popular specimen for crystal collecting and 'healing' purposes.

Geological facts

Red Jasper has been used since antiquity as a stone of protection and endurance. It was prominent in Egyptian amulets and is mentioned in various historical texts as a 'warrior's stone'. It is an opaque variety of chalcedony.

Field identification & locations

Identify in the field by its characteristic brick-red color, extreme hardness (it will scratch glass and steel), and smooth conchoidal fracture. Commonly found in riverbeds and desert environments where quartz minerals concentrate.

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sedimentary

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Metamorphic

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Gypsum (variety Selenite or Alabaster)

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Mineral

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Mineral/Rock

Granite

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