sedimentary

Brecciated Jasper

Sedimentary Chalcedony (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: Red/Brown with white/clear veins, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (Microcrystalline), Cleavage: None (Conchoidal fracture), Specific Gravity: 2.6-2.9

Hardness: 6

Identified June 6, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed when Jasper is fractured through tectonic activity and then re-cemented or healed by silica (white chalcedony or quartz) filtration. This process typically occurs in sedimentary environments or hydrothermal veins over millions of years.

Uses & applications

Commonly used in lapidary work for cabochons, beads, decorative carvings, and as a popular palm stone for collectors and metaphysical enthusiasts. Also used in construction as a decorative aggregate.

Geological facts

The name 'Breccia' comes from the Italian word for 'loose gravel' or 'broken stones'. While Jasper itself is common, brecciated patterns are prized for their unique aesthetic that resembles a mosaic.

Field identification & locations

Identify in the field by its distinct 'broken' pattern of red jasper fragments held together by clear or white quartz veins. It will scratch glass and lacks visible crystals with the naked eye. Found globally, often in desert regions.