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\Usually geodes (or their counterparts, nodules) can be identified by their shape, weight and texture. Many geodes are round or oblong and somewhat heavy for their size. The outside of a geode or nodule is usually worn down and resembles a head of cauliflower. Many geode crusts are limestone and may have a dull tan or brown coloration. But as for actually knowing if it is a geode by just looking, it is a probably a 70 percent chance of being correct.

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14y ago

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