12 oz Bloom Classic Mug with Hand Painted 22k Gold Lustre Crescent Moon with Moonshadow, Stars and Comets Discounted due to variations in the opacity of the center of the gold moon. Gold Lustre pieces are not microwave or dishwasher safe. The rim of this mug has been left raw. All of our ceramics are handmade, and our glazes are made in-studio with our own recipes. All of our ceramics are lead-free.