Resin Jewelry Mold. Assorted Stars And Heart Shapes. 5 Shapes On 1 Tray. Reusable mold for casting resin. Create your own unique resin jewelry. Made from durable yet flexible plastic. This plastic tray features impressions of hearts and stars, perfect for creating resin components to incorporate in your jewelry projects. Approximate Measurements: Stars measure 26mm (1), 30mm (1), and 42mm (1). Hearts measure 30x30mm (1), and 45mm across (double heart). Quantity: 1 Resin Mold Tray