Chinese Night Light Cup Mini Wine Glass Alcohol Glass Sake Cup Jade, Magnet Attracts Vintage, Excellent Condition, Antique This is one Chinese Night Light Cup (yakouhai) made of jade (a type of agate). It is said that the cup got its name because when you fill it with sake at night and hold it up to the moonlight, the cup glows. How about using it as an interior decoration, an ornament, or a wine glass, and enjoying your drinks in this unique vessel? Size: Diameter 6 x Height 10.2 (cm) Weight: Approx. 85g Condition: Vintage, Excellent Condition, Stored in a private home No box, no inscription Almost no signs of use, in beautiful condition. No significant damage found. Please forgive any minor scratches. For those who understand and appreciate pre-owned and vintage items. #sac's sake cups