Review (5/5): I am thrilled with this purchase!
I have very soft, problematic nails due to thyroid issues, and some emery boards leave jagged surfaces that can cause my nails to split and peel. I have tried every "fine" and "extra-fine" nail file I can find, and the result is always the same, until now. This is my first time using a crystal nail file, and the result is outstanding! Not a single rough edge that might snag on something. I'm so glad I decided to buy two so I can keep one in my purse.