Blue Slyme is a variation on our popular Slyme green: it ranges from transparent where thin or heated more, to translucent with a milky strike where it's worked cooler. But instead of an ectoplasmic green, this glass is a beautiful light-to-medium blue. The COE is a little bit high, like anything in the Slyme family. And like other Slymes, this glass likes a soft flame, especially when starting cold. We prefer a bushy soft neutral flame with this color. Generally speaking, if you get scuzz on the surface, turn down the oxygen and go a bit slower. If you are getting any graying, turn down the gas a little. Some people say they like to work it like a white. In the images you can see a honeycombed section; this color will go whiter under encasement but holds a bit more of it's color this way than the regular Slyme.