sedimentary

Red Jasper Pebble

Opaque microcrystalline Quartz (SiO2) with Iron Oxide

AI-generated identification · may be incorrect

Hardness: 6.5-7 Mohs; Color: Brick red to brownish-red; Luster: Dull/Waxy (unpolished) to Vitreous (polished); Structure: Microcrystalline; Cleavage: None; SG: 2.58-2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Dull/Waxy (unpolished) to Vitreous (polished)

Identified July 10, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Brick red to brownish-red; Luster: Dull/Waxy (unpolished) to Vitreous (polished); Structure: Microcrystalline; Cleavage: None; SG: 2.58-2.91

Formation & geological history

Formed as a chemical precipitate or through the replacement of organic materials by silica. The red color is derived from hematite (iron) inclusions during formation in hydrothermal or sedimentary environments.

Uses & applications

Used extensively in lapidary work for cabochons, beads, and tumbled stones. Historically used for seals and ornamentation.

Geological facts

Ancient Egyptians used Red Jasper for amulets to ensure protection; it is often referred to as the 'Stone of Endurance' in metaphysical circles.

Field identification & locations

Identify by its deep red color, conchoidal fracture, and inability to be scratched by a steel knife. Commonly found in riverbeds or gravel deposits globally.