I've used this for several years. There are no stains, but there are some minor, inconspicuous scratches from use, so it's not like new. Please check the photos for details. 《Noritake Stoneware Mug》 ⭐︎Size: Approximately 9cm in diameter x 9.5cm in height ⭐︎Microwave and oven safe ⭐︎Made in Japan ※Noritake Stoneware This is a highly heat-resistant ceramic that started in the 1970s. Among them, the Boulder Ridge series is designed with the motif of feathers that Native Americans wear on their hats. It is currently discontinued and is a popular and valuable item made in Japan. Stoneware is a ceramic made mainly of clay, and it has a hardness between porcelain and earthenware, making it convenient for everyday use, such as being compatible with microwaves, ovens, and dishwashers.