I did pull a 14K wedding band out of 7 inches of soil on a lawn today with racer - hit in low 80's which is above where I would have expected it to be on ID scale. Anyway it is shiny gold on the inside of the band and is inscribed 14K gold. But it is a greenish brown layer on the outer part. Anyone know how to get this greenish brown layer off the outside of the band to get it looking like gold again? I submerged it in warm water and dish detergent and gave it a brushing, but no luck.