UV Reactive Hyalite Opal on Black Tourmaline & Feldspar | Fluorescent Mineral Specimen from NamibiaHyalite opal from Namibia can form as delicate, glassy coatings on black tourmaline crystals, creating a striking contrast between the jet black mineral and the white to clear opal. The hyalite often appears as globules or a thin, sparkling film that catches the light, softening the bold, angular texture of the tourmaline beneath. Under ultraviolet illumination, the opal glows with a vivid green fluorescence, giving the specimen an unexpected