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Cristallo is a glass that is totally clear (like rock crystal), without the slight yellow or greenish color originating from iron oxide impurities. This effect is achieved through small additions of manganese oxide. [1] Cristallo often has a low lime content, which makes it prone to glass corrosion (otherwise known as glass disease).
Uranium (0.1 to 2%) can be added to give glass a fluorescent yellow or green color. [8] Uranium glass is typically not radioactive enough to be dangerous, but if ground into a powder, such as by polishing with sandpaper, and inhaled, it can be carcinogenic. When used with lead glass with very high proportion of lead, produces a deep red color.
Absinthe glass, a short, thick-stemmed glass with a tall, wide bowl and some feature (like a ridge, bead, or bulge) indicating a correct serving of absinthe; Chalice or goblet, an ornate stem glass, especially one for ceremonial purposes; Champagne coupe, a stem glass with a wide, shallow bowl, for champagne (similar to a cocktail glass)
The color of sea glass is determined by its original source, and most sea glass comes from bottles. Besides pieces of glass, colored sea pottery pieces are often also found. [3] The most common colors of sea glass are kelly green, brown, white, and clear that come predominantly from bottles of beer, juices and soft drinks and fishing floats ...
Murano glass makers developed the exceptionally clear colourless glass cristallo, so called for its resemblance to natural crystal, which was extensively used for windows, mirrors, ships' lanterns, and lenses. [21] In the 13th, 14th, and 15th centuries, enamelling and gilding on glass vessels were perfected in Egypt and Syria. [44]
A pendant made from modern dichroic glass. Dichroic glass is glass which can display multiple different colors depending on lighting conditions.. One dichroic material is a modern composite non-translucent glass that is produced by stacking layers of metal oxides which give the glass shifting colors depending on the angle of view, causing an array of colors to be displayed as an example of ...
Blank – any cooled glass object that requires further forming or decoration to be finished. [1] Blowpipe – a hollow steel rod, with a mouth piece on one end which the artist blows through to expand a bubble through the hot glass [1] Caneworking – the use of cane or rods with color, either single or multiple (see also zanfirico/twisted cane)
Obsidian is mineral-like, but not a true mineral because, as a glass, it is not crystalline; in addition, its composition is too variable to be classified as a mineral. It is sometimes classified as a mineraloid. [20] Though obsidian is usually dark in color, similar to mafic rocks such as basalt, the