UV Reactive Uranium Vaseline Yellow Iridescent Fire Polished Czech Glass Charm

Size: 1” clip to bead
Iridescent Fire Polished Glass Bead

Reactive under 395*

Uranium glass is characterized by the presence of uranium (oxide) and, in some cases, iron oxide. Uranium glass can register above background radiation on a sufficiently sensitive Geiger counter, although most pieces of uranium glass are considered to be harmless and only negligibly radioactive.

*PLEASE NOTE: Color of glass and glow may vary slightly from photographs due to variations in screen hues and nm of black light used to produce glow. The unit of measurement for light wavelengths is the nanometer (nm). Ultraviolet light is generally considered to be from 200 nm to 400 nm.