I create my murrini from a variety of COE 104 glass. Great mix of turquoise and ivory but this time with a transparent aqua core. Consistently stunning when applied with the reaction of the outside stripes. Sizes 3mm-7mm with average of 5-6mm. This murrini comes in packages of 20+ (I always throw in a couple extra). It has a smooth melt, will not scorch and melts evenly on enamels.