Fill mold with glass frit and scrap glass to create one-of-a-kind cast glass jewelry. Create three castings all at once! A necklace pendant, earrings, or whatever you desire. Try combining opal and transparent glass to give dimension or add sparkle with dichroic. Coat with casting primer before use. Mold measures 3-3/4" x 3-3/4". Finished project measures approximately 1-1/4" x 1-5/8".