✍️🪨⚪

#calcium carbonate #chalk #blackboard chalk #writing chalk #school supply #rock dust #white chalk

⬜💨✨

#chalk #chalk dust #white chalk #magic dust

✏️⬜✨

#chalk stick #white chalk #kapur #powdery #drawing chalk #writing tool

✏️⚪️💨

#chalk stick #white chalk #limestone stick #writing stick