http://www.beadiste.com/2014/10/puzzling-evidence-cloisonne-vs.html

LATER: the caption for this photo in the blog post distinguishes between cloisonne and champleve openwork, which perhaps I should have made more clear when posting this picture here as well.

The dragon bead on the left is cloisonne openwork, not champleve. There is an example of an openwork champleve bead in the blog post.