I got a bunch of glass shorts and one of them seems to be one of the special silver glasses. It is opaque, looks almost black, but in the light you can just about see it is a dark blue. The heated tip looks slate blue and I get blues and greens from it when I use it.
I've got soem beads in the kiln right now and will post pics tomorrow, but does this ring any bells with anyone? I'd love to get more, once I know what it is!
Thanks!
Forgot to say it is soft glass, most likely 104.