Glass can be a lot of fun and we stock a wide variety of innovative molds for shaping and fusing glass. Glass Frit: Our system 96 Frits are available in Powder, Fine, Medium, Coarse, and Mosaic particle sizes. (Iridescent colors are not available in Powder or Fine.) And come packaged in convenient 8.5-ounce containers. These Frits are primarily used in making Frit Casted Jewelry and complement our line of Frit Casting molds for Jewelry.