Ah, plum! Plum is such beautiful wood! I have a plum tree in my back yard, off of which a large limb fell a few months ago. I've been letting it season a bit, but I think I need to haul it inside now that winter is here. I'm a huge fan of Plum, though. Its beautiful wood, with a beautiful shimmering grain, and it often has this amazing plum purple staining as well. Easy to turn, finishes really well. Just love the stuff.
Your pen is wonderful. Looks like there are some little streaks of the plum purple in there, too!