These are the Black Crow Earrings with green seaglass, glass prisms and beading. The hooks and over all construction is made with Copper Wire to make the earrings live and change color over time. Copper does not withhold nickel. Copper withold animicrobial properties by effectively killing bacteria, viruses, and fungi by disrupting cell membranes, damaging DNA/RNA, and creating oxidative stress through released ions, often eliminating over 99% of microbes within hours on its surface,