Couldn't resist taking some shots of the Bismuth crystal *GeorgiaPeaches sent me for Christmas She bought it right here on dA from ~BeeblebroxZ. Check out his work, it's fantastic! [link]
A little info on Bismuth: It's 86% as dense as Lead, but has an unusually low toxicity for a heavy metal. It was recently discovered that it's slightly radioactive (it's half-life is more than a billion times the estimated age of the universe). It is known for it's stair-stepped structure, and exhibits iridescent colors upon oxidization.
Basically, it's a badass metal that reminds me of Tetris
I have one of these! It's kinda pale...but we were in a mineral shop and I asked for it for my birthday. Fascinating how it can be lab grown....I'm a little sad that a small chunk has broken off but it's still nice to look at