Earrings are cut and sanded, for smoothness from a contemporary asian tin and a vintage British tray.  
Earring wires are gunmetal grey plated brass, 16mm flat fishhook with open loop, 21 gauge.  Each pair come with silicone clear earring backs.
Earrings have been treated with a museum grade wax to protect and enhance, called Renaissance.
Ear wires can be switched out to a hypoallergenic Niobium, or sterling silver, if desired. The niobium is a gun-metal grey color. The added cost is $4.