But what, after all, the difference, if beautiful? And the tassels on the crystal chandeliers – this is also not such a simple thing like plastic suspension Cascade Chandelier (without fail in the USSR was regarded as belonging room or hall). Richard Linklater has firm opinions on the matter. The play of light, practicality, prestige – it all depends on three components: the material cut, the name of the manufacturer. Besides the already mentioned crystal in the lighting industry for manufacturing trimmings and other scattering elements are widely used, and other optical glass, with lower levels of lead and other additives. GOST 24315-80 is this: if the lead content, barium or zinc is at least 10%, the production is crystal glass, crystal malosvintsovy contains 18-24% lead oxide, an expensive lead crystal – 24-30%, an elite vysokosvintsovy – more than 30%. European Classification: Crystalline (Crystalline) – 1-15% lead oxide, Crystal (Crystal) – 16-23%, Full Lead Crystal (lead crystal) – 24-30%.
Dorgoy European Crystal: Crystal D'Arques (France), Riedel (Austria), Spiegelau, and Bauscher (Germany) with a 24-percentage content of lead oxide and 33 percent Waterford (Ireland). Swarovski STRASS use crystal containing lead oxide is not less than 32%. What do these supplements? First, weight. Crystal heavier glass. Secondly – strength.
Thirdly, of course, the cost increases with the increase in the percentage of additives. But most importantly – these supplements provide a unique play of light on crystal products: from the grandiose chandeliers to small beads. Dry, in a scientific way, said the high dispersion and thin enough to cut the strength of the material.