This makes them a preferred instrument by manicurists, although they are sometimes difficult to find in stores. Glass nail files come in very different qualities, some of them solid glass, others merely glass covered with an abrasive surface. Although the modern nail file only appeared at the end of the 19th century, evidence of nail file-like tools exist even further back in history. Marie Antoinette was known for her fondness with the "lime à ongles", which was a nail file-like tool made of pumice stone. When her perfectly shaped nails were seen, it became the latest female trend in the French Court of Versailles. The pumice stone was carved into a pencil-like shape, which was used to trim and shape the edges of the nail.