$Tumbled brecciated jasper (Microcrystalline quartz (SiO₂), likely jasper with contrasting mineral or silica-filled fractures) — mineral$

mineral

Tumbled brecciated jasper

Microcrystalline quartz (SiO₂), likely jasper with contrasting mineral or silica-filled fractures

AI-generated identification · may be incorrect

Opaque cream, tan, and brown mottling with a glossy tumbled surface; quartz has Mohs hardness 6.5–7, vitreous to waxy luster, and no cleavage. The visible pattern suggests angular fragments or veining, but the photo cannot confirm the exact variety.

Identified October 16, 2026More mineral →

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Physical properties

Formation & geological history

Silica-rich material formed through sedimentary or hydrothermal processes, with later fracturing and mineral infill; age and locality cannot be determined from appearance alone.

Uses & applications

Used for lapidary, beads, cabochons, ornaments, and collecting; jasper is also cut for decorative stonework.

Geological facts

Jasper is an opaque, impure variety of chalcedony; its colors and patterns come from fine mineral inclusions and impurities.

Field identification & locations

Look for hardness near 7, opaque coloration, and a smooth waxy-to-glassy polish. This small rounded piece appears tumbled; its exact identification and provenance would require testing.