A rhinestone is a small, sparkling fake gemstone made from glass or plastic that's cut to look like a diamond. Rhinestones catch the light and glitter brilliantly, making costumes, jewelry, and clothing look fancy without the enormous cost of real gems.

Today's rhinestones are manufactured to be dazzling, with precisely cut surfaces that reflect light from many angles at once.

You'll see rhinestones glued onto everything from dance costumes and phone cases to sneakers and jackets. Performers love them because under stage lights, a costume covered in rhinestones creates an eye-catching sparkle that audiences can see from far away. A single rhinestone might cost just pennies, but hundreds of them arranged in patterns can transform ordinary fabric into something glamorous and festive.

While rhinestones are imitations, they serve their purpose beautifully. Nobody expects them to be real diamonds. They're meant to add sparkle, celebration, and a touch of theatrical flair to whatever they decorate.