To provide some contemporary evidence to support your hypothesis that there were "luxury rocks" and that humans would be interested in such things, here is a ga

To provide some contemporary evidence to support your hypothesis that there were "luxury rocks" and that humans would be interested in such things, here is a gallery of various skins for a handheld rock in the videogame Rust. One of them costs $68 https://rust.esportinfo.gg/skins/tools/rock https://rust.esportinfo.gg/skins/tools/rock Humans haven't changed all that much since the Neolithic...