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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]
Glass is an essential component of tableware and is typically used for water, beer and wine drinking glasses. [51] Wine glasses are typically stemware, i.e. goblets formed from a bowl, stem, and foot. Crystal or Lead crystal glass may be cut and polished to produce decorative drinking glasses with gleaming facets.
Only glass products containing at least 24% lead oxide may be referred to as "lead crystal". Products with less lead oxide, or glass products with other metal oxides used in place of lead oxide, must be labeled "crystallin" or "crystal glass". [4] In the United States it is the opposite - glass is defined as "crystal" if it contains only 1% lead.
This vibrant cut crystal stemware is increasingly on the radar of collectors, and standard sets of six glasses can command prices of $100 and up, while others can run $100 or more per glass.
This list of glassware [1] includes drinking vessels (drinkware), tableware used to set a table for eating a meal and generally glass items such as vases, and glasses used in the catering industry. It does not include laboratory glassware .
In 1673, English glass merchant George Ravenscroft created a clear glass he called crystalline—but it was not stable. Three years later, he improved this glass by adding lead oxide, and lead glass (a.k.a. crystal) was created. [55] Ravenscroft, who had lived for many years in Venice, made lead crystal that was less breakable than cristallo. [56]