Square Copper Earrings with Turquoise Patina are a contrast in both texture and color as the bits of copper peak out of the turquoise patina and the sparkling iridescent turquoise crystal sparkles against the dull patina. These square copper patina earrings measure 13/4 iinches long and measure 5/8 inches wide and are suspended from surgical steel wires. Copper Patina Square Earrings