I don't know of any way of discerning the silver content of jewelry comming out of Thailand or Bali without having it tested. Most of the value of small silver items is not in the intrinsic value of the metal but in the labor required to make it. I suspect the silver content to be relatively high. I might suggest periodically testing a few sample items from stock you receive and that might give you an edudcated guess as to what you can suspect from a particular vendor. Hope this helps.