I think your question is more interesting. In so many countries, so many exhibitors, such as gems and jadeites, are all stones, but some are not natural, and some are only natural materials after artificial processing, so it is hard to say whether this question is true or not. Anyway, I went to see gems and emeralds, both natural and processed. It seems that most silver ornaments are not pure. But now a few people can see it, like silver ornaments. Generally, the silver in regular jewelry stores is not necessarily the highest purity silver, but few people know it. What thousands of feet silver, haha, is inherently low in purity.