Rock Identifier
Red Jasper (Microcrystalline Quartz (SiO2) with iron impurities) — mineral
mineral

Red Jasper

Microcrystalline Quartz (SiO2) with iron impurities

AI-generated identification · may be incorrect

Hardness 6.5-7, opaque, red color due to iron inclusions, smooth luster when polished, microcrystalline structure, conchoidal fracture.

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Physical properties

Hardness 6.5-7, opaque, red color due to iron inclusions, smooth luster when polished, microcrystalline structure, conchoidal fracture.

Formation & geological history

Forms in silica-rich environments, often as nodules in volcanic rocks or as sedimentary deposits. The red color comes from iron oxide (hematite) inclusions.

Uses & applications

Commonly tumbled or carved for jewelry, decorative items, and metaphysical uses.

Geological facts

Red jasper has been used historically for carved seals and talismans by various ancient cultures.

Field identification & locations

Identified by its opaque red color, hardness (scratches glass), and smooth, waxy luster. Found globally, with notable deposits in India, Russia, Brazil, and the USA.

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Gneiss or Schist

Gneiss or Mica Schist with Garnet

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Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary
Calcite–fluorite mineral specimen with iron-oxide staining (Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides) — mineral

Calcite–fluorite mineral specimen with iron-oxide staining

Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides

mineral
Septarian Pebble (Septarian nodule / Concretion) — sedimentary

Septarian Pebble

Septarian nodule / Concretion

sedimentary
Mineral Sand (Heavy Mineral Sand Concentrate) (Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite) — mineral

Mineral Sand (Heavy Mineral Sand Concentrate)

Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite

mineral
Epidote (Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic