sedimentary

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Hardness: 6.5-7 Mohs; Color: Brick red to brownish-red; Luster: Dull to greasy; Crystal Structure: Microcrystalline/Trigonal; Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Dull to greasy

Identified June 23, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Brick red to brownish-red; Luster: Dull to greasy; Crystal Structure: Microcrystalline/Trigonal; Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica in mineralized fluids, often within sedimentary or volcanic environments. The red color is caused by the inclusion of iron oxide (hematite).

Uses & applications

Used primarily for lapidary work, jewelry (cabs or beads), decorative ornaments, and widely collected as a balancing stone in metaphysical circles.

Geological facts

Jasper has been used as a gemstone since antiquity; it was mentioned in many ancient texts and used for cylinder seals in Mesopotamia and knapping tools by early humans.

Field identification & locations

Identify by its waxy luster when polished, opaque nature, and the fact that it cannot be scratched by a steel pocket knife. Found globally, especially in India, Russia, Brazil, and the USA.