Crystal Glass

https://www.evergreenglass.com/products/crystal-glass.html

Crystal Glass
Crystal glass, sometimes referred to as full-lead crystal or golden crown lead crystal, is a type of glass known for its brilliance, clarity, and superior cutting ability.

Unlike regular glass made primarily from silica sand, crystal glass incorporates lead oxide (PbO) into its composition. The lead oxide content typically ranges from 24% to 36%, significantly impacting the properties of the glass.