Zap! Powie! I don't think I've ever seen this material before; this cab has little orbs that look like tiny solar eclipses. I think I'm going to keep this one for the collection (sorry!).

Dimensions: 25.5mm x 19.5mm x 5.5mm.  Weight: 15.45 carats.

This cabochon is in my personal collection; it is not available for sale.