This beautiful display piece exhibits phosphorescence when under uv light. The crystals display a dark pink and red color. And hold that color for a short time after shown under uv light. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Rare Specimens". The seller is "coinkiller" and is located in this country: US. This item can be shipped to United States.