This silicone mould for casting crystal resin or Jesmonite, with 20 different shapes of approx. 6 mm in size, is reusable. Castings from the moulds make lovely resin or stone-effect jewellery, or decorations. To extend the mould's lifespan, we recommend applying a release agent to it before pouring. The moulds let you create lovely flowers, stars and crescent moons.