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Favrile glass is a type of iridescent art glass developed by Louis Comfort Tiffany. He patented this process in 1894 and first produced the glass for manufacture in 1896 in Queens, New York. It differs from most iridescent glasses because the color is
T g is directly proportional to bond strength, e.g. it depends on quasi-equilibrium thermodynamic parameters of the bonds e.g. on the enthalpy H d and entropy S d of configurons – broken bonds: T g = H d / [S d + R ln[(1 − f c)/ f c] where R is the gas constant and f c is the percolation threshold.
Art glass is a subset of glass art, this latter covering the whole range of art made from glass. Art glass normally refers only to pieces made since the mid-19th century, and typically to those purely made as sculpture or decorative art , with no main utilitarian function, such as serving as a drinking vessel, though of course stained glass ...
Crackled glass was glass filled with webs of small cracks and fissures, refracting light and causing the glass to have a sparkling effect. [1] Émaux-Bijoux was a technique invented by Emile Gallé. Translucent layers of enamel were built up in layers and then fused to a foil of precious metal, which was then heated and attached to the outside ...
In general opaque glass can devit easily as crystals are present in the glass to give its opaque appearance and thus the higher the chance it might devit. Techniques for avoiding devitrification include cleaning the glass surfaces of dust or unwanted residue, and allowing rapid cooling once the piece reaches the desired temperature, until the ...
Carnival glass was made in a wide array of colours, shades, colour combinations and variants. More than fifty have been formally classified. These classifications do not go by the surface colours showing, which can be even more varied, but by the 'base' colours of the glass before application of the iridizing mineral salts.
The Portland Vase, about 5–25 AD . Cameo glass is a luxury form of glass art produced by cameo glass engraving or etching and carving through fused layers of differently colored glass to produce designs, usually with white opaque glass figures and motifs on a dark-colored background.
Cameo glass was a means of decorating cased glass. The cased glass of two or more colors was carved with a diamond saw or etched with acid, so that the colors of the layer underneath were visible and created a design. Enamel glass was decorated on the outside by a brush of enamels colored by metallic oxides. [11]