Food Grade. Food and Non Food material should use separately. Wash and boil before use, especially for food. Easy to use mold very flexible and easy to clean, can be used in oven, dishwasher, refrigerator etc. Can be used within the temperature between 40~220 centigrade / 40~428 fahrenheit Durable and reusable mold. Transparent color, you can check the buttom when process project. Easy to demold, gloss finish Beginner friendly. Mainly use with modelling clay (air clay, paper clay, resin clay, polyclay, polymer clay, salt clay, metal clay, liquid clay etc.), resin(epoxy resin, rethane resin, uv resin, polyester resin), concrete, cement, plaster, gypsum,hot glue, soap, candle, wax, mix media and more Puzzle agate cut mold for pour art or resin craft projects. Combine 4 parts together can make a extra large irregular round platter. DIY faux agate gift by embedding dry flowers, glitter, gold foil flakes, crystals, mini stones, alcohol ink etc. Ridged circle edges agate slice resin casting trays. 4 different shapes, each around 4.6x4.6inch. Make big resin geode, celestial beverage coaster, petri dish, plate, candle or soap holder, serving board, cup mat, beer mug tile, decorative plaque, table decor and more.