CRANBERRY GLASS AN EVERGREEN FAVOURITE

Cranberry glass (or gold ruby glass as it was known in Europe, or Rubion Oro as it is known by glass workers) is a red glass made by adding gold oxide to molten glass. Tin, in the form of stannous chloride is sometimes added in minute amounts as a reducing agent. The gold chloride is made by dissolving gold in a solution nitric acid and hydrochloric acid (aqua regia). The glass is typically hand blown or molded. When finished, the hardened glass is a type of colloid, a solid phase (gold)

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