This is a very large example of this style from Mark, absolutely STUNNING in hand. Mark's work is master perfection, and this is one of my favorite designs from him. He had a secret source for Goldstone (which he told me had run out) and it gave us some of the most wonderful sparkle we've ever seen in marbles. It is way better in hand than these pics portray. And then those colors - YOWZA!! So beautiful. This gem is signed 'Matthews 2010'.