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Historic paint analysis, or architectural paint research, is the scientific analysis of a broad range of architectural finishes, and is primarily used to determine the color and behavior of surface finishes at any given point in time. This helps us to understand the building's structural history and how its appearance has changed over time.
The color is caused by the size and dispersion of gold particles. Ruby gold glass is usually made of lead glass with added tin. Silver compounds such as silver nitrate and silver halides can produce a range of colors from orange-red to yellow. The way the glass is heated and cooled can significantly affect the colors produced by these compounds.
Less common colors include yellow (canary), ultramarine, jadeite (opaque pale green), delphite (opaque pale blue), cobalt blue, red (ruby and royal ruby), black, amethyst, monax, and white (milk glass). Some depression glass is uranium glass. Although of marginal quality, Depression glass has been highly collectible since the 1960s.
Highest listing price on eBay: $750 Hazel Atlas Blue Royal Lace stands out among Depression glass patterns, prized for its intricate design and vibrant cobalt blue hue. Produced between 1934 and ...
Identifying carnival glass involves matching patterns, colours, sheen, edges, thickness, and other factors from old manufacturer's trade catalogs, other known examples, or other reference material. Since many manufacturers produced close copies of their rivals' popular patterns, carnival glass identification can be challenging even for an expert.
The French factory Portieux Vallérysthal in 1930 has put opal glass objects on the market in a particular blue-azure color. Some pieces have decorations in pure gold or polychrome enamels and are sometimes equipped with supports or hinges in gilded bronze (sets of plates, cruets, sets of glasses and cups, boxes, lamps, flacons, chandeliers).
The glass used was crystal and seven colors of glass: amber, blue, green, pink, amethyst, brown, and ruby. Among Jamestown stemware, ruby is valued higher than other colors by collectors. [80] Among the milk glass patterns, Vintage was used for tableware and a few types of stemware from 1958 to 1965. [81]
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.