Crystal Type of Glass

Crystal is a type of glass containing a significant amount of lead oxide. Addition of barium oxide basically just increases the refractive index. Addition of lead oxide also increases the plastic properties of glass and, consequently, the possibility of its processing - cutting, carving, etc. Cut crystal allows to fully display the properties due to high refractive index and dispersion. Name of crystal glass has been given by analogy with rock crystal. Melting lead oxide with silica, a compound of sodium or potassium, and small additions of other oxides makes it. Accustomed to our view glass obtained by fusing silica with oxides of various metals. The main component of the mass of glass is silicon dioxide. Get it from silica sand. From crystal produce many different dishes. Crystal first got in the XVII century in England. To this end, the glass mass began to add lead. The ordinary glass crystal has a more high gloss and high-refraction of light, making the game all the colors of the rainbow. It is durable and amenable to cutting. Stemware crystal collection looks like a precious stone.

Crystal is a softer material than simple glass. The traditional treatment for the crystal is a diamond face. Crystal is also decorated with engravings: small wheels remove superficial layers of glass. Crystal dishes decorated with various patterns. For decoration of crystal products use different technologies. Gold is one of the most popular means of decoration crystal stemware. The foil can be fused between layers of glass or cover it from outside. It is also possible signature of the surface oxide gold. The surface of the crystal dishes can be processed in a jet of sand - Technology matting. Obtained the same effect, as etching acid, but the plane is rough, coarse.