Artisan made turquoise sterling silver earrings dangle

now I don't know if these are 100% sterling silver. The artisan that made them told me that they were. I paid a pretty penny for them, so let's hope that they are. I don't want to mislead anyone. There is no 925 anywhere on the earrings but she said they were tested with her metal tester and that they were sterling vintage earrings throw it up to the universe