← The Boy Mechanic, Book 2: 1000 Things for Boys to Do, Volume 2
Chapter 194
Cleaning Gold and Platinum
A good way to clean gold or platinum jewelry is to first brush with soapsuds, then dust magnesia powder over the article and allow it to dry. A few rubs with a cloth makes the article shine with great luster. As magnesia powder is highly inflammable, it must be kept away from fire.