What does patina mean?
Patina refers to the natural weathering of copper due to airborne sulfur compounds, which gradually change copper s surface color. The resulting color, called a patina, depends on location and climate. Salt, moisture, sunlight, ultra-violet rays and pollution can affect the final color. In general, copper progresses from a natural salmon to shades of russet brown and gray, and then finally to a blue-green or gray-green patina color.
