Create Cast Glass Pendants Fill pendant molds with glass frit, scrap and powders to create one-of-a-kind cast glass jewelry. Try combining powders to create a marbled look or accent with dichroic. The possibilities are endless! Coat molds with ZYP Boron Nitride Spray or casting mold primer before use. Finished piece measures 1-3/4" wide x 2-1/8" long. Durable ceramic molds can be used many times. Overall mold measures approximately 3-1/4" x 3-1/2" x 1-1/2" high. Mold uses 20 grams of frit or scrap glass. Finished projects by artist Kayleigh Clark, Pam Peters and Maggi Blue.