This is a polished tumbler of Chokai Nishiki stone and jasper collected from Yuri Honjo Beach in Akita Prefecture. It has a beautiful shine, but there are scratches and dents from the original stone. There are also chips from polishing. Please check the photos (photo 17, top). The black, seaweed-like pattern is not dirt, but appears to be carbonized material. The round acrylic in the photos is for photography purposes, but I will include it for those who need it, so please comment. There may be some scratches. Size: Maximum height: approximately 5.9 cm Maximum width: approximately 3.9 cm Maximum depth: approximately 3.6 cm Weight: 123g It is a loose triangular prism shape. It's light, so I don't think it would work as a paperweight. Shipping will be via Rakuraku Mercari Compact size courier service. Thank you.