Real marbled paper, off-cuts from a larger book. My hand gives you some sense as to size -- it's about 1.5 inches by 2.5 inches.
Along with the camera battery going, my internet has been out for the past two days... meh. So, editing the scheduled post from work on my break (I'm a good girl, don't blog when I'm supposed to be working, but a 1-paragraph edit in my afternoon break is fine). Hope it gets back up soon... although I'll probably get more of the house cleaned tomorrow if it's not!