Break your own Geode

A great gift for any collector.  Just tap it gently with a hammer to break the geode in half.  You don't know what will be inside but no two are the same.  Each geode is natural and therefore different is shape and sizwe.  Each geode is approx a minumum of 100mm.  

I cannot confirm what each geode will look like inside as they are unbroken but are a crystal geode.