Cutom Crystal Awards and Glass Trophies Supplier in USA
Background Ordinary glass has been made for thousands of years and was a product of most ancient cultures. The ancients also began using crystal in its native form of rock crystal for beads, figurines, and dishes. In attempts to imitate nature, man began making glass that was termed crystal by adding metals to change the
The brilliance of lead crystal relies on the high refractive index caused by the lead content. Ordinary glass has a refractive index of n = 1.5, while the addition of lead produces a range up to 1.7[1] or 1.8.[6] This heightened refractive index also correlates with increased dispersion, which measures the degree to which a
Lead glass, commonly called “crystal”, is a variety of glass in which lead replaces the calcium content of a typical potash glass. Lead glass contains typically 18–40 weight% lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. Lead glass