This is "Hokai-matsu," made from crushed natural calcite. Contents: Net 500g (bag marked) ◎ As a white pigment for Japanese painting (alternative to Gofun) ◎ For ceramics, lacquer art, and craft materials ◎ Can also be used as a mild abrasive The bag is printed with "Tokutomi" and "Net 500." Unused old stock, but the bag has wrinkles and stains due to aging. The contents are not affected. ※ Sold for craft use. Not for food or medical use.