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Iowa's state rock, the geode, illustrates the adage that 'you can't judge a book by its cover,” said Marv Houg, president of the Cedar Valley Rocks and Minerals Society. 'It's a great teaching tool ...

Geodes can be obtained by breaking rocks in the Mines from levels 1-39 especially. They're also dropped by Duggies. You can find them in Fishing Treasure Chests, or receive them as gifts from the ...