From your link above:

Iodine is one of the most striking and beautiful of all elements. As a solid, it is a heavy, grayish-black, metallic-looking material. When heated, it does not melt. Instead, it sublimes. Sublimation is the process by which a solid turns directly to a gas without first melting. The resulting Iodine vapor has a violet color and a harsh odor. If a cold object, such as an iron bar, is placed in these vapors, Iodine changes back to a solid. It forms attractive, delicate, metallic crystals.

Thanks, I was wondering what sublimation was...I found some purdy pictures:)

Sublimating Iodine





Iodine in Crystal form:





I do feel as though I am purple-deficient! :)