YALEY- Resin Jewelry Mold. These reusable plastic molds are heavy duty but also flexible and made to last a lifetime. These molds are also great for polymer clay products. This mold makes three abstract shapes ranging in size from approximately 3/4x3/4in to 1-1/4x1in. Mold itself measures approximately 3-1/2x4-1/2in. Made in USA.