Glassware is a vessel made of glass.
Glassware is mostly made of soda lime silicate glass, which is colorless and transparent. The iron content in the glass is generally less than 0.02%. Adding coloring agent to glass raw materials can make colored glass; adding opacifier to make opalescent glass (see Glass Manufacturing).
Potassium lead silicate glass, also known as lead crystal glass, is used to manufacture high-end art utensils such as goblet, perfume bottle, fruit bowl, etc.
This kind of glass contains PbO, has high refractive index and dispersion, it is especially bright when the edge surface is ground, high specific gravity, and it makes a crisp sound when struck.
