Grow your own bismuth crystals

Thanks to bismuth's low melting point of 271°C, you can grow your own crystals by melting and then cooling bismuth in a stove pot. A pound of pure bismuth runs $25 (shipping included) -- much cheaper than buying large crystals -- and you can even use molds to create geodes or other shapes. Check out the video, or if you prefer written instructors, see this tutorial.