Geodes have been popular in the beauty industry for some time now, with make up artists replicating the rock via nail art and lip art.
'I've always loved geodes and crystals, one day I was talking with a family member and we were at a geode shop and I came up with the idea of splitting my arm open to show what's underneath, geodes and crystals, instead of gore and blood and scary stuff,' Katy told FEMAIL.
'I wanted to turn it into something beautiful to show that we all have tiny universes in us.'
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Source : http://www.dailymail.co.uk/femail/article-5269431/Woman-creates-geode-body-art-using-make-up.html