This is an Eto (Chinese Zodiac) ink stick that was sold in limited quantities in 2006. It was refined using fine particle lampblack. When used in a concentrated form, it produces a glossy, pure black, and when diluted, it yields an elegant black-brown ink color. After use, wipe the grinding surface and store it in the paulownia box, avoiding high temperatures and humidity. This is an unused item stored at home. Please purchase only if you understand this. Unused item. Immediate purchase OK.