Rubedo is an additional, or secondary substance which is present in some alchemical ingredients in addition to the primary substance. All alchemical ingredients contain one of six basic substances: aether, hydragenum, quebrith, rebis, vermilion and vitriol. There are also three additional substances: albedo, nigredo and rubedo. Any given ingredient may contain only a single basic substance and potentially one additional, or secondary substance.
Rubedo is an additional, or secondary substance which is present in some alchemical ingredients in addition to the primary substance. All alchemical ingredients contain one of six basic substances: aether, hydragenum, quebrith, rebis, vermilion and vitriol. There are also three additional substances: albedo, nigredo and rubedo. Any given ingredient may contain only a single basic substance and potentially one additional, or secondary substance.