For those who collect shiny things
Unique Prism Stone
Prism Stone of Usagi-no-Nedoko

Prism Stone is made from recycled prisms, parts of projectors that were not put into production due to large cracks or chips. The surface is polished using a technique called barrel polishing, giving it a matte texture like sea glass. The fragments, which emit colorful light inside the frosted glass that reflects the surrounding light, are very mysterious.