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During the late 18th century Richard Champion, a Bristol merchant and potter, making Bristol porcelain, was working with a chemist, William Cookworthy. [1] Cookworthy began a search for good quality cobalt oxide to give the blue glaze decoration on the white porcelain and obtained exclusive import rights to all the cobalt oxide from the Royal Saxon Cobalt Works in Saxony. [2]
Blue Pale to deep blue. [20] Cobalt Blue A deep shade of blue and the most sought after. [20] Independence Blue 1975-76 A cobalt blue carnival treatment made during the U.S.Bicentennial. [21] Green This color ranges from a deep green to a light yellow green. [20] Marigold A yellow orange color. [20] Red A red color that is deep when held to a ...
Small concentrations of cobalt (0.025 to 0.1%) yield blue glass. The best results are achieved when using glass containing potash. Very small amounts can be used for decolorizing. 2 to 3% of copper oxide produces a turquoise color. Nickel, depending on the concentration, produces blue, or violet, or even black glass.
The most common method of adding the black linear painting necessary to define stained glass images is the use of what is variously called "glass paint", "vitreous paint", or "grisaille paint". This was applied as a mixture of powdered glass, iron or rust filings to give a black colour, clay, and oil, vinegar or water for a brushable texture ...
Delftware or Delft pottery, also known as Delft Blue [1] (Dutch: Delfts blauw) or as delf, [2] is a general term now used for Dutch tin-glazed earthenware, a form of faience. Most of it is blue and white pottery , and the city of Delft in the Netherlands was the major centre of production, but the term covers wares with other colours, and made ...
Cobalt blue is a commonly used color for interior decorating. [7] Automobiles. Several car manufacturers including Jeep and Bugatti have cobalt blue as paint options. Construction. Because of its chemical stability in the presence of alkali, cobalt blue is used as a pigment in blue concrete. Sports. Two Major League Soccer teams have cobalt ...
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