Search results
Results from the WOW.Com Content Network
Prince Rupert's drops. Prince Rupert's drops (also known as Dutch tears or Batavian tears) [1] [2] are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail.
Powder glass beads are made from finely ground glass, the main source being broken and unusable bottles and a great variety of other scrap glasses. Special glasses such as old cobalt medicine bottles, cold cream jars, and many other types of glasses from plates, ashtrays, window panes - to name only a few - are occasionally bought new, just for ...
Glass bead making has long traditions, with the oldest known beads dating over 3,000 years. [1] [2] Glass beads have been dated back to at least Roman times. Perhaps the earliest glass-like beads were Egyptian faience beads, a form of clay bead with a self-forming vitreous coating. Glass beads are significant in archaeology because the presence ...
Roman pearl is an alabaster core coated with a pearlescent material. [1] Shell pearl. Cut, buffed, and sometimes dyed nacreous portions of mollusk shells: Variations and alternate names include cat's-eye pearl, coque de perle (from nautilus shells), mother-of-pearl pearl (from mother-of-pearl), and hinge pearl (from the hinge of bivalve shells ...
The term rosetta first appeared in the inventory of the Barovier Glass works in Murano, in 1496, in context with beads as well as with other glass objects. Venetian chevron beads are drawn beads, made from glass canes, which are shaped using specifically constructed star moulds. The first chevron beads were made towards the end of the 15th ...
Kiffa bead, cylinder. Glass which is finely crushed to a powder is mixed with a binder such as saliva or gum arabic diluted in water. Decorations are made from the glass slurry i.e. crushed glass mixed with a binder and applied with a pointed tool, usually a steel needle.
The lamp-work method is the most time-consuming method of glass bead-making, as each bead must be formed individually. Using a torch for heat, Murano glass rods and tubes are heated to a molten state and wrapped around a metal rod until the desired shape is achieved. Several layers of different colored glass, as well as gold and silver leaf ...
Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently.