[thirty] Pumice in powdered type was an ingredient in toothpastes in ancient Rome.[31] Nail care was extremely important in historical China; nails had been held groomed with pumice stones, and pumice stones have been also employed to remove calluses. On account of its porous framework, pumice is used in soil https://echobookmarks.com/story19399745/pumice-stone-can-be-fun-for-anyone