mineral
Tumbled reddish-brown stone, possibly jasper or quartzite
Uncertain; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper
AI-generated identification · may be incorrectSmall rounded specimen with reddish-brown and pale cream areas, dull to slightly waxy luster, and no visible crystals or cleavage. Likely hardness about 6.5–7 Mohs; specific gravity approximately 2.6–2.7.
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Physical properties
Small rounded specimen with reddish-brown and pale cream areas, dull to slightly waxy luster, and no visible crystals or cleavage. Likely hardness about 6.5–7 Mohs; specific gravity approximately 2.6–2.7.
Formation & geological history
Probably a naturally silicified rock or jasper fragment shaped by tumbling or abrasion; iron oxides produce the red-brown coloration. Exact geological age and locality cannot be determined from the photograph.
Uses & applications
Used as a low-cost decorative stone, craft material, worry stone, or lapidary/tumbled specimen; unsuitable for major construction use at this size.
Geological facts
Jasper is an opaque variety of chalcedony, while quartzite is a metamorphosed sandstone; both can look similar when polished or weathered.
Field identification & locations
Test for hardness against ordinary glass, inspect for conchoidal fracture, and use a streak test: jasper commonly leaves a white streak. A close view and locality information are needed for confident identification.
