Fritillaria seawater refers to a kind of imitation pearl, which looks like a pearl. It is made by grinding the pearl layer of a shell into powder, making it into balls, and then coating it with pearl liquid once. Because mother-of-pearl is artificially made, it is easier to shape than natural pearls, with fewer appearance defects and higher ornamental value, so it can be made into various decorations. Many watch brands also use this feature to make dials, so that the dials show all kinds of charming colors and light in the sun. "