Thumler Model B - 15lb Heavy Duty Rock Tumbler Machine:Tumbler with Grit (4 months worth) Metal clasp

Metal clasp

possibly a mass die-off from an ash fall event or algal bloom

and "classic" most sold rock pick of all the options

The colours found in the wood come from an assortment of trace minerals

Thumler Model B - 15lb Heavy Duty Rock Tumbler Machine:Tumbler with Grit (4 months worth) Metal claspDescription: This is my most highly recommended rock tumbler. The barrel is large, so after waiting a month for the rocks to tumble, you'll get a large yield out of it. The hexagonal shape helps pick up the rocks better and create the slope inside that actually "tumbles" the stone. The barrel will not wear out, unlike Lortone tumblers that have a textured rubber barrel that loses its grip after a few years. USA made means it comes with factory