The color changes due to the characteristics of uranium glass when illuminated with a black light. I am not an expert on uranium glass, so please check the photos. Please confirm the size in the photos. ★Please be sure to read the profile along with this before purchasing. I generally do not negotiate prices, but for those who purchase two items (two listed items) and wish to combine shipping, I will offer a discount for combined shipping costs, etc., so please comment with your desired price. These items are stored at home by an amateur. Please only purchase if you understand this. The colors may differ slightly due to the lighting conditions during photography. There may also be other areas that I have overlooked. Please refrain from purchasing if you are concerned about minor details or are overly sensitive. If you would like to confirm something, I will add photos or confirm details, so please comment. Requests after purchase, such as how to package the item, or specifying the delivery date are not possible, so please be sure to confirm before purchasing.