Just recently used some ointment whilst wearing a 'silver' ring purchased in November, and the ring is now completely ruined. The so called silver, has come off, and the ring is a dark metal now. Tried silver polishing it, but to no avail. I loved that ring too!!
So much for all the kerfuffle weighing the ring etc, it was not real silver at all. I have tested the ointment on other silver and it was unaffected, so......... beware.