How can you tell if rhinestones are real?

To tell if rhinestones are real gemstones or imitations, you will likely need to consult an experienced jeweler, appraiser or dealer. Although there are tests you can try, like attempting to scratch glass or dropping jewelry in water, these at-home methods could damage the jewelry. An expert can examine a piece under magnification to determine if it features a glass, acrylic or plastic rhinestone or a real gemstone. Find a variety of rhinestone jewelry on 1stDibs.