Lead crystal
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Lead crystal, (also called crystal), is lead glass that has been hand or machine cut with facets. Lead oxide added to the molten glass gives lead crystal a much higher index of refraction than normal glass, and consequently much greater "sparkle".
Famous makers of lead crystal objects include Royal Leerdam Crystal of the Netherlands, Steuben Glass in the United States, Waterford Crystal in Ireland, and Swarovski in Austria.
See also
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