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Here is some history about Rosarita Stone: Rosarita is a unique material, which derives its exceptionally rich, red color from the process of gold refining. It is a unique by-product of the 1960s and 1970s gold refining processes. Alaskan beach sand was smelted for its gold content and the slag by-product was Rosarita, which is essentially a gold-infused glass. The base material for Rosarita is silica (which is quartz particles) mixed with gold at high temperatures. Old processes prior to 1960 used the old method of open crucible and fire (infused heat) to smelt the sand, leaving behind a glass-like material in the crucible known as slag. This...