Twinbird Elm 5 Pure Copper Mirror Finish Tea Set A tea cup and coaster set made of pure copper with a beautiful color. The glass cup and holder can be removed. Although unused, there are some areas where the color has changed. I don't think there are any noticeable large ones. The cups are cloudy, but since they are glass, they should become clean if you wash them. I have been using other copper cups for many years, and I don't particularly mind the areas that have turned black, and I can use them without any problems ◎ This item has been stored at a private residence for a long time, so please understand this before purchasing. I will ship this item as is, in this box.