I wanted to post a picture of the bead made of the glass mentioned below. This is Chalcedony, G109. It is very similar to Raku (R108), which I can not get to do anything for me. (I also can't get color with TerraNova, Khaos, or Luna2). I get tan and blah. Not with this one. I get reds, purples, pinks, oranges, blues and greens. This was the one with the best colors. Chalcedony on Black.