Create Cast Glass Cabochons Designed for Snap Jewelry Findings Fill pendant molds with glass frit, scrap and powders to create unique glass cabochons to accentuate your snap jewelry findings. Mold produces twelve 1" round castings. Finished pieces measure approximately 7/8" in diameter. The mold measures 4-3/4" x 6". The fill weight is approximately 6 grams. Ceramic molds can be used many times. Kiln wash before use. Images courtesy of Creative Paradise.