I create my murrini from a variety of COE 104 glass. These colors remind me of the Southwest. With the sun setting behind the mountains, these colors have the same softness and beauty. 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.