Quite a few people have asked me which art glass I find easiest to cut ... whether it's opaque, wispy or transparent glass.
Overall, I find that opaque or transparent single color glass is far more likely to break where I expect it to.
Streaky glass often breaks in the wrong place. I presume this is to do with the way the various colours are mixed together during the production of the glass.
Anyhow, one colour performs better than all the rest ... watch this video to see :)