Crystal glass is a type of glass that contains lead oxide, which gives it a higher refractive index and greater brilliance than regular glass. This composition allows crystal glass to sparkle and reflect light beautifully, making it a popular choice for fine glassware, decorative items, and jewelry. In addition to its aesthetic qualities, crystal glass is often more durable than ordinary glass due to its density. It can be shaped into intricate designs and is commonly used for items like wine glasses, chandeliers, and figurines. However, it is generally more expensive and requires careful handling to avoid chipping or breaking.