About Copper Starlingear: Copper, while cheaper as a material than silver, is exponentially harder to cast and has a very large loss rate during the process. That means that a large number of those hand cleaned and inspected wax pieces are lost. Copper is an almost organic material and that is part of the coolness. Each piece is hand crafted and finished and will have its own look and colors may vary. It will also age, change, and patina over time.