Smooth banded river-style stone

This item appears to be a small, naturally smoothed rock or river stone. Based on the accompanying tape measure, the object is approximately 5 centimeters (roughly 2 inches) in length. It possesses a rounded, oblong, and slightly flattened shape consistent with water-worn erosion. The surface is primarily a dark charcoal or slate-grey color, characterized by prominent horizontal white or light-grey banding along the sides, which suggests a sedimentary or metamorphic composition such as striped gneiss or a similar banded silicate. The texture appears matte to slightly satiny, with visible surface pits, minor scratches, and small indentations consistent with natural environmental wear. There are no visible maker's marks, inscriptions, or hallmarks, as is expected for a natural geological specimen. The owner indicates the item was 'found,' which is consistent with its appearance as a naturally occurring pebble rather than a manufactured or synthetic object. Without a physical mineralogical test or a density check, the exact geological classification remain a hypothesis. The craftsmanship is entirely natural, resulting from the mechanical action of water and abrasive debris over an undetermined period of time.

Based on my visual assessment of the photo, this item appears to be a naturally occurring river stone, approximately 5cm in length, exhibiting characteristic water-worn erosion and geological banding consistent with striped gneiss or a similar metamorphic silicate. From what I can see, the stone features a charcoal grey body with light grey concentric banding and a matte surface texture. I cannot verify the exact mineral composition from a photo alone; a physical density test or mineralogical scratch test would be required to provide a scientific classification. The owner's submission indicates this item was 'found,' which aligns with its appearance as a natural geological specimen rather than a manufactured object. The valuation range of $5 to $15 is based on the general market for 'pocket stones' or curiosity specimens of this size and aesthetic appeal. While attractive, such stones occupy a very low price point due to their abundance in nature. Demand for unworked, naturally occurring pebbles is generally limited to the souvenir or hobbyist market. The value is tied entirely to its visual appeal as a natural object; if the stone were found to contain rare mineral inclusions or possessed a specific historical provenance—neither of which are visible or documented here—the value could slightly increase. Conversely, as a common geological find, its market value is negligible compared to professional lapidary work or rare gemstones. To determine a more precise identification, an in-person examination by a geologist would be necessary.