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Vintage cranberry glass bowl The beaker with lid made from Gold Ruby is attributed to Johann Kunckel. Cranberry glass or ' Gold Ruby ' glass is a red glass made by adding gold salts or colloidal gold to molten glass. Tin, in the form of stannous chloride, is sometimes added in tiny amounts as a reducing agent. The glass is used primarily in ...
Cranberry glass bowl Photochromic eyeglass lens. The coloring is caused by silver nanoparticles. Selenium, like manganese, can be used in small concentrations to decolorize glass, or in higher concentrations to impart a reddish color, caused by selenium nanoparticles dispersed in glass. It is a very important agent to make pink and red glass.
The Romans are known to have cut glass, and glass cutting was rediscovered by Germans in the 17th Century. The technique spread to the British Isles before it was brought to the United States during the late 18th Century. [47] Pittsburgh's Bakewell and Company was an early 19th century glassmaking firm that became known for its cut glass. [2]
Flint glass melted in tank: In 1898 Charles H. Runyon of the Keystone Glass Company in Rochester, Pennsylvania, was the first in the United States to melt the batch for flint glass in a tank. [21] Note 11 ] A second source calls the Rochester company operating at that time (1897–1905) by the name of Keystone Tumbler Company.
The glass made using this formula had good enough quality that the company could compete in the high-end of the glassware market. [62] This improvement in the formula for glass was considered one of two great advances in American glassmaking during the 19th century, the other being the invention of pressing. [63]
The Westmoreland Glass Company was founded in 1889 when a group of men purchased the Specialty Glass Company located in East Liverpool, Ohio, and moved it to Grapeville, Pennsylvania. [1] Grapeville was chosen as the location of the factory because the property had a large source of natural gas. George West served as president of the company ...
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