You Light up my Life!

We were doing research on crystals in the bookstore and library yesterday. We found an interesting stone, which has a combination of colors: it appears white with black spots in the photo. This stone has unique qualities. It lights up the dark and conversely, darks up the light. It's a rare stone, called Merlinite. I would venture a guess that the name has something to do with the famous wizard, Merlin.