Most gold plate will thin over time, but some go on for years, the fact it's white gold is no different to normal gold tho. It should go on for a good few years yet. Your friend sounds as if they maybe just wanted to make a point.
I own trion:z bracelets and they are great! I like that they have both negative ions and magnets, yet are much less expensive than the other bracelets. I believe that the trion:z works very well. I bought mine from an eBay dealer, got it for just und...
ebay or a jewellery making suppliers. try this website