Why do Galway Crystal glasses sparkle more than regular glass?

The sparkle comes from the way crystal interacts with light. Galway Crystal uses materials that increase refractive index, which means light bends more as it passes through. Cut patterns on the surface break light into small reflections, creating a bright and sharp appearance. Even simple designs can produce noticeable shine under normal lighting. The clarity of the material plays a part, as crystal contains fewer impurities than ordinary glass. During production, polishing steps improve surface smoothness, which allows light to reflect more cleanly. A well-cut Galway Crystal glass can reflect light from multiple angles at once, giving it a lively look. This effect is one of the main reasons crystal has remained popular for decorative use. Studies of lead crystal show it can reflect light up to 20 percent more than standard soda-lime glass.