yep .935 was a typo!!! (and I type for a living)
No idea if it is legal or not -- just "buyer beware" in terms of educating ourselves.
Just like old beads are often sold as vintage or antique, and in the furniture world, there are very specific limits for the use of those words to describe antiques. Yet we often see layman selling things at yard and sales and on the internet where the words are used indiscriminately. It is a matter of educating yourself and watching out for whether it is a true statement or not.
Some of the gems sold on ebay (especially in finished jewelry) are lab- created but not marked as such, especially from countries where English is not the primarly language, but they posted the auction in english. Sometimes descriptions are so funny, LOL. I used to repost the really good ones.
So, with Tibetan Silver -- buyer beware. Doesn't matter if it is legal or not -- it is still going to be described incorrectly sometimes. LOL
Becki