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Archive for October 1st, 1969

Why Jewelry Sometimes Blackens the Skin or Clothing

Wednesday, October 1st, 1969 by D.E. Gardam and Dr. Alexandea A. Fisher D.E. Gardam and Dr. Alexandea A. Fisher

Metallic Abrasion

Make-up present on the skin or clothing is the most common cause of the blackening or smudging. Cosmetics often contain chemical compounds which are harder than the jewelry itself. Metallic abrasion occurs when these hard compounds come in contact with the jewelry metals and wear or rub off very tiny particles of metal which appear as jet black dust. (more…)