Hey everyone, thanks for the comments, should have left a few more details, but was kind of in a hurry.
Yep, the pen is a Baron guts in it. I didn't actually use a pool cue to start, made this all from scratch (learned some pool cue techniques). The Black is Ebony, the White diamond is Ivory scrap from a pool cue maker. It will likely end up being a desk pen, but I'm working on making a nice Pool Table case for it. Really set it off. Again appreciate the comments, was fun to make.