[thirty] Pumice in powdered form was an ingredient in toothpastes in historic Rome.[31] Nail treatment was important in historical China; nails have been stored groomed with pumice stones, and pumice stones have been also applied to eliminate calluses. Pumice can be valued in metaphysical circles for its associations with cleansing https://singnalsocial.com/story4384640/an-unbiased-view-of-pumice-stone