I purchased this ring just over a year ago. I'm not sure it's pure sterling silver. It seems to be copper, plated in silver. My ring has turned a rose color, and is no longer silver. I'm going to try to contact the shop, and see what they say. I'm also going to post a picture of it stacked with another sterling silver ring to show the color difference. I've tried cleaning it with a cleaning cloth, hoping that it was some strange oxidation, but it's only gotten worse. I'm an avid sterling silver jewelry consumer, and none of my other sterling jewelry has ever done this. I'm giving it 2 stars because of the beautiful pattern.