Thank you for viewing. This item was collected along the coast of the Seto Inland Sea. I believe it can be widely used depending on your ideas, such as for DIY projects, aquariums, interior design, andオブジェ (objets d'art). (Personal opinion) I have removed the tannins by soaking it in baking soda water followed by fresh water, and then sun-drying it, but I have not boiled it. When using it, please use your own judgment and take responsibility for any additional maintenance. This is a natural, one-of-a-kind, unprocessed item. The images represent the entirety of the item. When delivering the item, I will use newspaper as cushioning material and ship it with care. However, as it is a natural item, I cannot be held responsible for any damage or chipping during shipping, so please understand. This item has been stored and managed by an amateur. Please refrain from purchasing if you are sensitive to imperfections or seek a perfect item. Thank you for your understanding.