Opal tear drop ear rings with small diamonds beautiful

Opal ear rings. I would call the shape of the opal a tear drop. They are topped with a cool pattern of little stones. I used a standard Diamond tester & they reacted positive for Diamond. I do not see any other markings on them, so I don’t know for sure the metal content, but I got these a long time ago, and guessing from the person I got them from, I believe them to be a nice quality