What is a red amorphous powder consisting of ferric oxide. It is used in polishing glass, metal, or gems, and as a cosmetic, etc. Called also crocus, jeweler's rouge, etc called?

rouge — (Chem.) A red amorphous powder consisting of ferric oxide. It is used in polishing glass, metal, or gems, and as a cosmetic, etc. Called also crocus, jeweler's rouge, etc. (Webster's 1913.)

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