My favorites are translucent ones like types of quartz, amethyst and agate. It's fun watching them get clearer and shinier with each step.
this post was submitted on 26 Apr 2026
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Cool Rocks
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Minerals are cool, too.
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Those are some of my favorites, as well. I have lots that were gifts. I don't think I've found any good rocks myself to tumble but I will have to look in the buckets from the coast. There's got to be something that will tumble well, right? I've only ever found small agate from the beach. Does size matter when tumbling?
Agate tumbles well, yeah. Size matters - you want to have about the same size/hardness rocks together. If they break up in the tumbler, I remove them to run a different batch with smaller ones.
Size does matter....Haha rock tumbling humor right? That's good info, I probably would have been bummed seeing a rock break or think I did something wrong!