Your Own Automatic Rock Polisher
Estimated reading time: 1 minute(s)
It might not sound this exiting, but this device is actually pretty cool. You put a stone in it, any stone, and then let it do its thing; and after a while you have a really shiny stone. Which you can make your own jewelry or other things with. Even regular looking pebbles can sometimes hide really nice looking minerals, with this you can find out.