gold ruby glass

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Scope note
Glass of a deep red color that is produced by a colloidal gold solution prepared by dissolving gold in aqua regia, sometimes including some tin or silver salts. Gold ruby glass was made by the ancient Egyptians and Romans; the ancient technique was lost until rediscovered in 17th-century Germany. Gold was also thought to be anti-toxic and to protect from poison anyone who drank from it.
gold ruby glass
Accepted term: 08-Jul-2024