[RSimmons]

If you've got a larger murrini then you'll probably need to physically polish the surface to reduce or eliminate the scumming. This is especially important if the slices are cut with a relatively coarse diamond saw. I use a very fine lapidary blade to cut my butterfly slices and they come off the saw polished to a pretty good finish. Coarser blades will leave a rougher surface that translates to tiny bubbles when you put it on or in a bead. Most people who make paperweights will polish to a high gloss finish on a flat lap. It's a PTA, but it's be best way to do it.

Robert