Trio of smooth river-style stones

This set consists of three naturally rounded stones, each exhibiting unique geological characteristics. The largest stone is dark charcoal gray with a matte, finely textured surface, showing small natural indentations. The second stone is an off-white or light gray quartzite-like specimen, possessing a semi-glossy finish and subtle brown veining. The third, smallest stone features a tan or honey-colored palette with visible crystalline banding, consistent with a variety of jasper or agate. All three objects appear to have been water-worn or tumbled to a smooth, ergonomic shape. There are no visible maker's marks, signatures, or inscriptions, indicating they are likely natural geologic found objects rather than manufactured items. The surfaces show minor surface scuffs and organic staining, typical of riverbed or coastal origin. Due to the lack of identifying labels, any attribution to a specific geological site or age is hypothetical and unverified. Their aesthetic is consistent with decorative home accents often used in Zen-style gardening or massage therapy (hot stones).

Based on my visual analysis of the provided image, this trio of smooth, river-style stones appears to be composed of natural geological specimens. From what I can see, the set includes a dark charcoal-colored stone, a light-colored quartzite-like specimen, and a smaller tan stone with banding suggestive of jasper or agate. While I can identify these as naturally water-worn or tumbled objects, I cannot verify their specific mineral composition or geographic origin without a physical geological examination. The value is based on the assumption that these are decorative, found objects or mass-marketed home accents. The current market for such items is relatively stable, with they being frequently sold as 'Zen' decorative sets or massage therapy aids. Because these stones lack any professional lapidary work, rare mineral qualities, or documented provenance to a significant site, their value resides primarily in their aesthetic appeal. If these stones were to possess rare mineral properties or were associated with a significant cultural site, the value could increase slightly; however, in their current state as unworked natural objects, the provided range reflects their typical retail replacement cost. To confirm any higher valuation, one would need scientific testing for mineral density and provenance documentation. If these are later identified as synthetic or common cast-resin reproductions rather than natural stones, the value would likely drop to the lower end of the provided estimate or less.