Milestones Stepping Stone Mold 12" Heart- Reusable plastic Stepping Stone Mold to making your own stepping stone. Add color to the stone mixture, add glass or mosaic pieces, create designs with words, or leave imprints from a child's hand or your pets paw. Treasures that will last a lifetime. For your best results be sure to read and follow directions. The mold is approximately 1.5" high.