Tumbled brown translucent mineral fragment

Small tan-brown, translucent, rounded fragment with a dull-to-waxy luster and no clearly visible crystal faces. Hardness is visually uncertain: quartz/chalcedony would be Mohs 7, while feldspar is about 6; cleavage is not apparent.

Likely a naturally weathered or transported mineral grain, possibly from volcanic or sedimentary rocks. The image cannot establish geological age or exact formation process.

If quartz or chalcedony, it has minor collector and lapidary interest; otherwise it is an ordinary pebble with negligible commercial value.

The brown coloration may result from iron-oxide staining or inclusions. Its small size and rounded form suggest abrasion in stream, beach, or soil environments.

At approximately 18.8°N, 95.8°W, weathered volcanic-derived minerals and quartz-bearing sediments are plausible. Test cautiously: quartz scratches glass and does not scratch easily with a steel knife; feldspar may be scratched by steel. A close-up beside a scale, plus streak, hardness, and transparency tests, is needed for identification.