This is a cut glass piece made with cobalt blue overlay glass. It features traditional cuts centered around a star pattern, which sparkles beautifully when exposed to light. Due to its size, it's easy to use as a cold sake cup or shot glass, and is recommended for those who like Japanese glass and cut glass. There are no noticeable chips or cracks, and I believe it is in good condition overall. There is no box or maker's mark, but it is a well-made cut glass piece. Please purchase only if you understand that this is a used item and has been stored at home.