Yesterday we went to a thrift store. My wife likes to look through jewelry. I found a bag of interesting stuff and bought it for her. It cost two dollars for the bag. Inside the bag she found a 10 K ring with 5 diamonds that had a slight blue tinge to them and a 10K ring with a red garnet in it. The cross ring just said 10K, while the garnet ring said AU 10K. The AU stands for gold. I probably could not have done better with my detector!