Gourmet Basics Belmont Blue Mug (13-Ounce, Set of 4) Gourmet Basics Belmont stoneware adds a striking, organic look to any table setting Crafted of stoneware, featuring a reactive glaze Due to the nature of reactive glaze, each piece of this handcrafted collection will exhibit unique variations in color and pattern Microwave and dishwasher safe From Gourmet Basics by Mikasa Collection