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Posted January 13, 2013
Promote an interest in rocks & geology!
I bought the same Rock Tumbler for my son when he was younger. Now, my niece has shown an interest in geology & rocks, so I found the same reliable tumbler. It is easy to use, all needed materials are included - even the rocks, and it even teaches patience! This is definitely not an instant reward item. It takes several weeks to grind and polish the rocks before they change into beautiful shiny specimens!
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