Ceramic pieces are high fired to 2100 degrees, durable and microwave, dishwasher, and oven safe. Pieces for sale at NDAGA Exhibit Tour, Your Own 2 Wings Boutique in Bismarck, ND, and LynnLee Boutique in Royalton, MN. For more pieces visit my Etsy Shop at https://www.etsy.com/shop/KatieVasbinder *for Bismarck/Mandan locals, pick-ups can be setup to remove shipping cost.