Rock Identifier
Polished reddish-brown stone bead, possibly jasper (Likely iron-rich microcrystalline quartz (jasper; SiO₂), but the image is not sufficient for a confident identification) — gemstone
gemstone

Polished reddish-brown stone bead, possibly jasper

Likely iron-rich microcrystalline quartz (jasper; SiO₂), but the image is not sufficient for a confident identification

AI-generated identification · may be incorrect

Smooth, opaque, reddish-brown and glossy from polishing; if jasper, hardness is about 6.5–7 Mohs and its quartz crystals are too fine to see. The bead’s material and specific gravity cannot be determined from the image.

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Physical properties

Smooth, opaque, reddish-brown and glossy from polishing; if jasper, hardness is about 6.5–7 Mohs and its quartz crystals are too fine to see. The bead’s material and specific gravity cannot be determined from the image.

Formation & geological history

If jasper, it formed as silica-rich material that became colored by iron oxides; its geological age and source are unknown. It has been shaped and polished into a bead.

Uses & applications

Likely used in jewelry or as a decorative bead; jasper is also used for carvings and ornamental objects.

Geological facts

Jasper is an opaque variety of microcrystalline quartz, commonly patterned and colored by mineral impurities.

Field identification & locations

The visible polished bead is compatible with jasper, but other stones or manufactured materials can look similar. Identification requires tests such as hardness and closer examination; no locality can be inferred.