mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Hardness: 6.5-7 (Mohs); Color: Red, earthy red, or brownish-red; Luster: Vitreous to dull; Crystal Structure: Trigonal/Microcrystalline; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Red, earthy red, or brownish-red
Luster: Vitreous to dull

Identified May 10, 2026More mineral →

Explore Red Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when silica-rich fluids permeate through volcanic rocks or sedimentary deposits, picking up hematite (iron) content which provides the red pigment. It is commonly associated with ancient seafloor hydrothermal activity or sedimentary layering.

Uses & applications

Primarily used for lapidary work, jewelry (cabochons and beads), ornamental carvings, and as a decorative stone in landscaping. Historically used for seals and amulets.

Geological facts

Known as the "Stone of Endurance" in some cultures, it has been used since ancient times. Legend says it was one of the stones on the High Priest\'s breastplate in the Bible.

Field identification & locations

Identify by its opaque red color and smooth, waxy, or matte surface. It is commonly found in gravel pits, riverbeds, and desert regions worldwide, particularly in high concentrations in areas like South Africa, Brazil, and the USA.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

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

metamorphic

Gypsum (variety Selenite or Alabaster)

Calcium sulfate dihydrate (CaSO4·2H2O)

Mineral

Nephrite Jade

Nephrite

Mineral/Rock

Granite

Granite (Phaneritic intrusive igneous rock)

igneous