Cernit Translucent Phosphorescent Polymer Clay 56g Polymer clay for baking. Cernit Translucent polymer clay gives the appearance of precious stones. It is the most translucent of the polymer clays. It is ideal for making jewelry. You can use your hands, the rolling pin or the rolling pin. Once your piece has been created, preheat the oven to 130º, once hot, insert the project and bake it for 30 minutes at the same temperature. Once cool you can sand, polish... Resistant and flexible. Brand: Cernit