Earrings are cut and sanded, for smoothness, from the 2 Tins in the images. 
Ear wires are gunmetal-plated brass, 15mm fishhook with open loop.  Each pair come with silicone clear earring backs. 
Earrings have been treated with a museum grade wax to protect and enhance, called Renaissance.
Some Tins are Vintage and worn and add a Unique element to the Design.