I am looking at buying a crucifix.I have acidic skin and the only piece of jewelry I haven't corroded is a ring that as far as I know is pure silver. I can't afford gold. I need to know what is considered GOOD silver. i.e sterling silver is that pure ? No speculations please guys. What do I need to look for. And if anybody is Orthodox,I need some good leads on some affordable and reputable websites selling Orthodox crosses. Thanks for your time and have a great shave man !