Artists

3/8" - so it is basically a 3/8" by 9 1/4" circle of solid glass. That's also on the thick side for fused glass, most of which is usually 1/4" thick (if you leave fusible glass in a kiln at around 1500 degrees for long enough it will eventually even out into a 1/4" - 6mm - thick piece no matter who thick it was when you started - it is nicely reliable - this piece started at 6 1/4" by 5/28" and sat in the kiln for 1 hour 45 minutes at 1490 to get to the size I ended up with).

What makes blown glass lighter is you can get it reasonably thin if you are any good at it (sometimes you can get it too thin, especially if you aren't good at it). So, with blown glass you could make a plate that was only about 3/16" which would still probably weight 1 pound. One of the many things I struggled with when I tried to blow glass was I lacked the arm strength to pick up a nice big blob of molten glass from the crucible on the end of a 5 foot pole!