Learn how to polish rocks at home with a rock tumbler, the fun and popular hobby of transforming rough rocks into beautiful gemstones. If you make a purchase using any affiliate link below, we may ...

National Geographic Pro 3 Rock Tumbler Kit: Ideal for bigger stones or tumbling more stones at once, this 2 lbs barrel rock tumbler is great for seasoned geology lovers who are deep into the hobby ...

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this.

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this.

EARTH'SCODE Rock Tumbler kit: $99 now $48.99 at Amazon. Grab this tumbler for 50% off - a great upgrade from your beginner set. KomeStone K1 Professional Rock Tumbler Kit: $81.98 now $69.98 at Amazon.