It is not available for beadmaking. I know a little bit more about it, and also have some examples. It comes in different colors, but the most used is an orange one. I am not sure how it is made, but I believe there is something sandwiched inside the glass. Probably not actual foil, but maybe something fumed. Either way, it does not hold up to being reheated. I have found no examples of this type of glass being used at the torch. All examples I know are pressed/molded from thick rods. It has been made after the 1950's, but I do not believe it is being produced anymore today.
It is somewhat similar to the faux opal from Czech in it's look, but not in it's technique. Faux opal, as Rebecca stated, can be mimicked fairly easy with some experimenting. In the first image there are two examples side by side. The one with the opalescent white, frit and foil are faux opal. The ones on the right are dragon's breath. The second image shows all dragon breath cabs. It is pretty fascinating stuff.
