Search results
Results from the WOW.Com Content Network
Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense colouring agent and very little is required to show a noticeable amount of colour. Cobalt glass plates are used as an optical ...
Details of the process and the composition of the glass vary and so do the results, because it is not a simple matter to obtain or produce properly controlled specimens. [5] 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 ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
Elegant glass manufacturers produced vibrant colors that varied far more than Depression Glass. [1] Shades of red, blue, green, amber, yellow, smoke, amethyst, and pink were produced. An easy way to compare the difference in color quality is to take a look at a piece of cobalt Elegant glass and place it alongside a piece of cobalt Depression Glass.
The fired body is naturally white but usually stained with metallic oxide colors; its most common shade is pale blue, but dark blue, lilac, sage green (described as "sea-green" by Wedgwood), [9] black, and yellow are also used, with sage green due to chromium oxide, blue to cobalt oxide, and lilac to manganese oxide, with yellow probably coming ...
Cobalt(II) oxide is an inorganic compound that has been described as an olive-green [3] or gray [4] solid. It is used extensively in the ceramics industry as an additive to create blue-colored glazes and enamels , as well as in the chemical industry for producing cobalt(II) salts.
The Ball Brothers' jars, which were produced in half-gallon, pint, and midget sizes, were manufactured during 1884, 1885, and 1886. “Buffalo” jar lids were produced in a Ball Brother metal fabricating factory. The brothers decided to add their logo onto the surface of the glass jars, which were amber or aqua (blue-green) at the time. [3 ...
Hazel-Atlas Glass Company. The Hazel-Atlas Glass Company was a large producer of machine-molded glass containers headquartered in Wheeling, West Virginia. It was founded in 1902 in Washington, Pennsylvania, [1] as the merger of four companies: Hazel Glass and Metals Company (started in 1887) Atlas Glass Company (started 1896) Wheeling Metal Plant