mineral

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Hardness: 6.5-7.0 (Mohs scale), Color: Teracotta red to deep brick red, Luster: Vitreous to dull, Crystal structure: Trigonal/Microcrystalline, Cleavage: None/Conchoidal fracture, Specific gravity: 2.58-2.91

Hardness: 6

Identified March 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from hydrothermal solutions or volcanic ash into sedimentary environments. Its red color comes from iron impurities during the silicification process throughout various geological periods.

Uses & applications

Used primarily in lapidary work for cabochons, beads, and stone carvings. Also valued in the crystal healing community and used historically as an ornamental stone in construction and jewelry.

Geological facts

Jasper has been a popular gemstone since ancient times; it is mentioned in several ancient texts and was used as a seal stone in the Palace of Knossos on Minoan Crete. It is known as the 'Supreme Nurturer' in metaphysical circles.

Field identification & locations

Identify in the field by its opaque nature, high hardness (will scratch glass), and smooth waxy feel when polished. It is commonly found globally, particularly in India, Brazil, Egypt, and the Southwestern United States.

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