(inspired by an unrelated thread) Anyone collect gems/minerals? I went to a mineral show last weekend and got inspired to start up a collection. My collection actually began in the 3rd grade when my teacher was selling $1 grab-bags, in which I got some form of copper ore, a sample of pyrite, a polished chunk of what I believe is amethyst and a yet to be identified green mineral, all of which I still have. This weekend I went and picked up a nice sample of optically clear calcite (which is birefringent), a cool ziggurat-like bismuth crystal with an iridescent oxide layer, and a nice sample of chalchopyrite (which is artificially tarnished to produce a very pretty oxide layer, but it looks awesome so I don't mind). My collection is modest at the moment, but I plan to go to more shows and slowly expand it. Maybe even go out and try to collect some samples from natural sources. Anyone else collect or have an interest? Pics very much encouraged.