[30] Pumice in powdered variety was an ingredient in toothpastes in historic Rome.[31] Nail care was crucial in historic China; nails were being stored groomed with pumice stones, and pumice stones have been also used to eliminate calluses. Geologists identify opportunity pumice deposits by finding out volcanic action and examining https://friendlybookmark.com/story19311439/everything-about-eden-pumice-stone