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The National Geographic Hobby Rock Tumbler Kit is a complete rock polishing ki... The National Geographic Hobby Rock Tumbler Kit is a complete rock polishing kit that allows your child or teen to turn rough rocks into gemstones. Tumbler kit by National Geographic includes one pound of rough gemstones eight packets of polishing grit... more

Set includes 1 high-quality tumbling machine 1 upgraded leak-proof tumbling ba... Set includes 1 high-quality tumbling machine 1 upgraded leak-proof tumbling barrel deck of 52 playing/trivia cards 1 bag of rough gemstones 4 bags of polishing grits 1 bag of assorted gemstones 1 rock strainer 5 jewelry settings 1 rock tumbler learning... more

A brand new way to make tumbled rocks shine! GemFoam is a unique new rock poli... A brand new way to make tumbled rocks shine! GemFoam is a unique new rock polishing media that gives unprecedented shine to tumbled rocks. Just add the patent-pending rock polishing media to your more

NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit - 1 Lb. Mix of Genuine Rough Agate... NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit - 1 Lb. Mix of Genuine Rough Agate Rocks for Tumbling - Rock Tumbler Supplies Include Rock Tumbler Grit and Jewelry Accessories Raw Agate Description Features: Agates from around the world 1 lb. Of rough... more