Bangle bracelet, Beautiful! I am not a jewelry expert but this was an estate find and I thought it was beautiful and unique. I believe it's copper and not brass because it's more the color of a penny, brass tends to be more golden in color. The green appears to be painted on and then rubbed off to expose some of the copper underneath. It's surrounded by some kind of faux diamonds, all are present.
The green color reminds me of native American turquoise a bit is the best way I can describe it.
Bracelet measures approximately 2.5 inches in diameter using the inside measurements. It's stunning, if I wore something besides the same silver hoops I wear everyday, I would keep it but it should be enjoyed. Please inspect the photos.