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Although helenite and obsidian are both forms of glass, helenite differs from obsidian in that it is man-made. The stone has been marketed by the jewelry industry because of its emerald-like color, good refractive index, although its durability is low. It has a hardness of just 5 to 5 ½ and chips about as easily as obsidian or window glass.
They were often incorporated into fine glass art paperweights. Until the 15th century, Murano glass makers were only producing drawn Rosetta beads made from molded Rosetta canes. Rosetta beads are made by the layering of a variable number of layers of glass of various colors in a mold, and by pulling the soft glass from both ends until the cane ...
Millefiori beads from Murano. Murano beads are intricate glass beads influenced by Venetian glass artists. Since 1291, Murano glassmakers have refined technologies for producing beads and glasswork such as crystalline glass, enamelled glass (smalto), glass with threads of gold (), multicolored glass (millefiori), milk glass (lattimo) and imitation gemstones made of glass.
The glass typically used for these products is now called peachblow glass (not peachbloom), although the original product names differed. [78] Among the rivals to Hobbs, Brockunier, and Company that made peachblow glass were New England Glass Company (Wild Rose), Thomas Webb and Sons (Peach Glass), and Stevens and Williams (Peach Bloom). [79]
Image credits: Detroit Photograph Company "There was a two-color process invented around 1913 by Kodak that used two glass plates in contact with each other, one being red-orange and the other ...
Price on eBay: $8,500 Porcelain dolls don’t have to be more than 2 feet tall to be worth a lot of money. This little lady stands only 15 1/2 inches tall, but her ornate details and impressive ...
Lithophane of Frederick the Great, lit from front.After a well known painting by Julius Schrader (1849). [1] The same lithophane, backlit. A lithophane is a thin plaque of translucent material, normally porcelain, which has been moulded to varying thickness, such that when lit from behind the different thicknesses show as different shades, forming an image.
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