You would swear that these polymer beads by the UK’s Emma Ralph were glass, wouldn’t you? The metallics look suspended in the medium and the colors are almost dichroic.
It’s not surprising that Emma is also a lampworker. Her familiarity with glass translates to polymer perfectly. You can see her Shabby Silks and Illuminare series of polymer faux glass on her site and more examples on her Facebook EJR Beads page.