These towers contain a mix of Ruby(purple), Ruby Fuchsite (brighter green), Ruby Kyanite(blue) and some also have small bits of other things like Ruby Zoisite (darker green). The Ruby in these Towers reacts to UV Light as seen in the photo/video. This is also how you can tell a real tower from a fake one. Various High Quality Natural Crystal Towers available, use the selector to see the photo of your specific choice. When available our Ruby Fuchsite Towers and Ruby Kyanite Towers can both be found listed separately.