Three (3) Ruby Stones * Filing with Ruby Stone feels good and is kinder to nails than other types of files. Compare the smooth action of Ruby Stone with the unpleasant grating of ordinary emery boards and metal files. The Ruby Stone Crystal Nail File is less likely to tear or fray even the most fragile nail, promoting the vigorous growth of smoother, healthier looking nails. Ruby Stone out-performs common files because it is made of thousands of micro-jewel crystals. Unlike ordinary emery boards or other coarse nail files. The jewels that make up the surface of the Ruby Stone file are very, very fine. Each jewel has many extremely sharp edges that cut your nails clean without tearing or ripping. Even very fragile nails won't tear. * Three (3) Ruby Stones Crystal Ruby Stone / Filing with Ruby Stone feels good and is kinder to nails than other types of files. Compare the smooth action of Ruby Stone with the unpleasant grating of ordinary emery boards and metal files. / The Ruby Stone Crystal Nail File is less likely to tear or fray even the most fragile nail, promoting the vigorous growth of smoother, healthier looking nails. Ruby Stone out-performs common files because it is made of thousands of micro-jewel crystals. Unlike ordinary emery boards or other coarser nail files. / The jewels that make up the surface of the Ruby Stone file are very, very fine. / Each jewel has many extremely sharp edges that cut your nails clean without tearing or ripping. / Even very fragile nails won't tear.