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Viola sororia ( / vaɪˈoʊlə səˈrɔːriə / vy-OH-lə sə-ROR-ee-ə ), [ 5] known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.
Cobalt glass. 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 ...
Glass coloring and color marking may be obtained in several ways. by the addition of coloring ions, [ 1][ 2] by precipitation of nanometer-sized colloids (so-called striking glasses[ 1] such as "gold ruby" [ 3] or red "selenium ruby"), [ 2] Ancient Roman enamelled glass, 1st century, Begram Hoard. by colored inclusions (as in milk glass and ...
Most wine glasses are stemware, that is they are goblets composed of three parts: the bowl, stem, and foot. In some designs, the opening of the glass is narrower than the widest part of the bowl to concentrate the aroma. [ 3] Others are more open, like inverted cones. In addition, "stemless" wine glasses (tumblers) are available in a variety of ...
According to Giffard, one of the main brands you’re likely to see on shelves, the liqueur’s history can be traced to the 1800s, when violets were a popular component in everything from syrups ...
Copper oxides produce green or bluish green, cobalt makes deep blue, and gold produces wine red and violet glass. Much of modern red glass is produced using copper, which is less expensive than gold and gives a brighter, more vermilion shade of red. Glass coloured while in the clay pot in the furnace is known as pot metal glass, as opposed to ...
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