Sterling silver and copper forged hoop necklace with blue opal

Sterling silver  and copper forged hoop necklace with a blue opal gemstone. The sterling and copper hoops have been hammer textured. The copper hoop has been colored with a chemical patina and sealed to protect against tarnish. The pendent is just under 2 inches long by 1.5 inches wide. Chain is adjustable 26-28 inches.