What stone is this?

I have a stone I cannot identify. Can anyone help me? I'm not a photographic wizard, so please forgive the poor quality.

I picked this up when I went to the Third Eye quite some time ago, on my first stone-shopping adventure. I was quite overwhelmed by everything I found; I hadn't gone shopping specifically for stones - Tanya and I took an afternoon off and decided to pop into the shoppe before heading home. There were so many stones for exceptional prices, and I was immediately swept away by the variety. I could hardly grasp what I was looking at before my attention was diverted to other, interesting things. A number of the bins I was poking around in were unlabeled, so I had to sort out what I got later.

Now, I've got this terrific books on stones and I realize I cannot find this stone in it so far. I thought it was watermelon tourmaline after looking at photographs in Scott Cunningham's book on stone and metal magic, but I'm beginning to doubt that based on what I'm finding now.