JTV sells FAKE jewelry as Real

So the other day I sent in some old silver and gold to US Gold Buyers.. I've used them before so I know they are top notch.. Anyhow, when they called me yesterday they told me 2 of the rings I sent in marked at Sterling Silver actually have no precious metal content at all.. I was told they were covered in Rhodium plating and the metal underneath was a mystery metal. He told me what rings they were and they were 2 that I had bought from JTV a long time ago. I have only bought from them once and now I won't ever buy from them again. So beware if you're thinking of buying from them..