sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Hardness: 6.5-7 on Mohs scale; Color: Brick red to deep terracotta red with dark grey or black veins/dendrites; Luster: Vitreous to dull (highly glossy when polished); Crystal Structure: Microcrystalline (trigonal quartz framework); Cleavage: None (conchoidal fracture).

Hardness: 6
Luster: Vitreous to dull (highly glossy when polished)

Identified July 22, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed when fine microcrystalline silica precipitates in sedimentary environments or hydrothermal veins, deriving its rich red color from fine inclusions of iron oxides (hematite).

Uses & applications

Used extensively as an ornamental stone, lapidary material, tumbled pocket stone, for jewelry (beads, cabochons), and in spiritual/healing practices.

Geological facts

Jasper has been used as a gemstone and seal material since antiquity. Ancient civilizations like the Egyptians and Greeks valued Red Jasper as a protective stone and assigned it to blood and vitality.

Field identification & locations

Identified by its opaque appearance, distinct red hue caused by hematite, conchoidal fracture, and ability to scratch glass (hardness 7). Commonly found in South Africa, Brazil, India, Australia, and the USA.

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