Pale Periwinkle Pottery Mug Turned on the potter's wheel with textural grooves, this handmade mug is accentuated with very light, pale periwinkle glaze on the exterior and a classic white on the interior. Perfectly suitable for everyday use, the durability of high-fired stoneware clay allows the mug to be microwave safe, oven safe, and dishwasher safe. Mug holds approximately 16 ounces (2 cups) ; mugs sold separately. Lead free, cadmium-free and Handmade in Ohio. ~ Made by hand in the USA ~ size: 3.25" high x 3.5" rim diameter volume: holds 16 fluid ounces materials: stoneware Note: Stoneware is safe for oven, microwave, refrigerator and dishwasher use, but should not be used with a direct flame or on a stove-top. As with all pottery, stoneware should not be placed in a refrigerator when the surface is hot, placed under water when hot, or in a stove/microwave when chilled. Always begin from room temperature or close to room temperature.