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The answer is Iron(III)Oxide, better know as rust.
Its effect on iron implements requires no further elaboration; as red ochre it was and is a cosmetic; and as jewellers' rouge it is used in the manufacture of lenses or 'glasses'. See:
http://en.wikipedia.org/wiki/Ochre
http://en.wikipedia.org/wiki/Jeweller%27s_rouge
For the etymology of 'gild' see: http://dictionary.reference.com/browse/Gild.
'Rowald' can be rendered as the 'Red Lord'; 'rime', frost or coat with tiny granular particles such as rust; also alternative spelling of rhyme. |
