Le Creuset Stoneware 3-Quart Soup Tureen, Indigo Blue High-quality exterior enamel protects against metal marks and other damage Unmatched thermal resistance from -65f to 500f safe for the freezer, microwave, oven, broiler and dishwasher Less than 1% porosity, blocking moisture absorption which can lead to cracking, crazing and rippling along the interior Durable, chip, and stain resistant. A perfectly color-matched palette of bold, consistent tones for easy mixing and matching with other Le Creuset products