Hip to be Square Murrini SQ02-96 is made from Uroboros glass and is compatible with many COE 96 glasses. Murrini diameter varies between 5mm and 12mm. Fuse-Flat Slices: These slices are cut and selected especially for artists who use a kiln to form their glass. One half ounce is between 40 and 90 slices, depending on the diameter of the murrine. There will generally be a lot of variability in the diameter of slices.