Thank you for viewing. This was given to my father, who does calligraphy. He has his own and doesn't use these, so they're being offered to someone who will. The material appears to be stone. If you are looking to make your own personal seals, please consider these. - Color: Green, Red - Material: Stone - Shape: Cylindrical - Quantity: Set of 4 - Size: Approximately 6cm long - Use: Presumably for seals Included are four of these seal stones and four boxes. Please feel free to ask if you have any questions. Also, the shipping method is set to Yu-Yu Mercari Delivery, but it may become Raku-Raku Mercari Delivery.