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Cut glass wine glass made of lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. [2]
The original Glencairn glass is approximately 115 mm (4 + 1 ⁄ 2 in) in height and has been available in three variations: 24% lead crystal, lead-free crystal, and soda-lime glass. [ citation needed ] The vast majority of glasses in circulation are of the lead-free crystal variety.
Cut glass vase. Waterford Crystal is a manufacturer of lead glass or "crystal", especially in cut glass, named after the city of Waterford, Ireland.In January 2009, the main Waterford Crystal manufacturing base on the edge of Waterford was closed due to the insolvency of Waterford Wedgwood PLC, and in June 2010, Waterford Crystal relocated almost back to the roots of glass-making in the city ...
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Lead increases the weight of the glass and causes the glass to disperse light more. Glass can contain up to 40% lead, if maximum hardness is desired. On the other hand, crystal can contain less than 24% lead if it has a high proportion of barium oxide, which ensures high quality light diffraction. [5] The term "half-crystal" has been used ...
Ajka Crystal exports 90% of the factory's total production – both in tableware (stemware, tumblers etc...) and in giftware (vases, bowls) – for brands such as Wedgwood, Tiffany's, Rosenthal, Waterford Crystal, Polo Ralph Lauren, Christian Dior, Moser and other high-end French crystal manufacturers. [3] [4] Ajka Crystal is located in Ajka ...