14k White Gold clasp. Akoyas, South seas or Edison. I tried the light from below and saw pink/green on 3 pearls faintly. (I don't know if I should trust that.) They are about 8mm-9mm. They have an much lower luster than my other akoyas even after washing in handsoap. They have low grit, which makes me think saltwater. I don't think Edison, only because they don't have any metalic luster & a vintage clasp. I need professional help!