Geo
Well-known member
I am doing a refine for a gentleman that sent me some contact pins that have tiny points. The pins had a silver color but testing showed the pin were coated in tin. The points are a karat gold that contains silver. Percentages are unknown but the silver to gold ratio is very low. I would estimate at less than 3% silver by weight. This could be skewed because the final clean up of the points was done in hot dilute nitric acid.