Photo of the Day: A Gypsum Giant

A giant gypsum crystal sits on display at the Smithsonian Institute's National Museum of Natural History.  The museum boasts a large collection of gem stones like this crystal.  It seems like it would take a large time for a crystal this large to materialize however with the right nutrient rich soil and ideal temperatures a big crystal can develop pretty quickly.  (Photo: February 14, 2009)

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