mineral

Red Jasper

Jasper (Silicon Dioxide with iron oxide inclusions), SiO2

Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Vitreous to dull (waxy when polished); Crystal Structure: Microcrystalline quartz; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Brick red to brownish-red
Luster: Vitreous to dull (waxy when polished)

Identified March 26, 2026More mineral →

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Physical properties

Formation & geological history

Formed from the deposition of silica from water solutions into fissures or cavities in volcanic rock or as a sedimentary replacement product. Its red color comes from iron inclusions (hematite). Many specimens date back millions of years from various geological eras.

Uses & applications

Used primarily in lapidary for making cabochons, beads, and jewelry. Also used as a decorative stone in mosaics, aquarium gravel, and as a popular 'pocket stone' in metaphysical and collector communities.

Geological facts

Red Jasper has been used by ancient civilizations for thousands of years; Egyptians used it for amulets and scarabs, while it was known as the 'rain bringer' in some Native American traditions. It is an opaque variety of chalcedony.

Field identification & locations

Identify in the field by its opaque brick-red color and high hardness (it cannot be scratched by a steel knife). Commonly found in stream beds, gravel pits, and desert regions. Major sources include India, Brazil, Russia, and the USA (southwestern states).

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