Thanks for the nice comment on those beads I posted. They are one of my favorites to make unless they crack in my kiln and I have to throw them away. Lampwork (that's what making bead out of glass is called. I have no idea why but tnobody asked me what to call it ). The art has been around for hundreds of years. It's very interesting (OK, here I go.....) because different colors of glass rods can react differently with other colors PLUS the torch uses a mixture of Oxygen and Propane and the combination of the gasses can also effect the outcome of the bead. Black glass is actually a dark purple unless you want to spend $100/ pound for it. Sorry but I find this a very interesting art and sometimes I get carried away talking about it.