These sculptural earrings are of brass, that has been brushed, buffed, scratched, rubbed, and anything I could think of to make plain ole brass more interesting. They are about 1 inch square, and have sterling posts. If you are sensitive to brass, but want to wear these, you could put a bit of fabric between your ear and the metal. The earring on the left most represents the actual color. The earring on the right has a lot of reflection from the light.