Yes I agree that it is not a good idea to wear jewelry in public here. But there may be a niche for people who sell gold, silver or diamonds as an INVESTMENT, since lately there has been an increase in goverment promulged obstacles to purchase US dollars.
And in order to buy gold coins or bars, you have to provide your complete name, DNI number and address, making you a possible target for an armed robbery (or worse), since you are not assured that your personal info can not be leaked out to criminals.
But buying gold or diamond jewelry by passes all of this, I think, and could became the way to save for some rich Argies. Good Luck Henry