sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 Mohs; Color: Brick red to deep terracotta; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red to deep terracotta
Luster: Vitreous to waxy

Identified July 18, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Brick red to deep terracotta; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica-rich fluids in cracks or as replacement minerals in volcanic or sedimentary environments. Its red color is derived from iron (hematite) inclusions incorporated during the solidification process.

Uses & applications

Commonly used in jewelry (cabochons, beads), decorative carvings, lapidary arts, and as an ornamental gemstone for metaphysical collecting.

Geological facts

Jasper is an opaque variety of chalcedony. Historically, it was known as the 'warrior's stone' in various cultures and used for talismans. It is found in massive formations rather than individual crystals.

Field identification & locations

Identify by its rich red color, opacity (light will not pass through even on thin edges), and smooth, shell-like (conchoidal) fracture points. It is found worldwide, with major deposits in India, Russia, Brazil, and the USA.