This is "Suisho-matsu," or powdered natural crystal. Contents: Net 400g (bag label included) Grade: #4 ◎ As a white pigment for Japanese painting ◎ As a base material or additive for ceramics, lacquer art, and crafts ◎ As an abrasive or experimental material ※ The bag has wrinkles and discoloration due to aging. ※ The contents are not affected. ※ This product is for craft use. It is not for consumption or medical use.