UV Reactive Uranium Glass Opalescent Square Lamp Shade

Size: 6” wide, 4” fitter

Glows best under 365nm*

Uranium Ghost Glowers: For every rule there is an exception. While nearly all uranium glass will glow brightly under 395nm UV light every once in a while you may come across a piece that really only seems to react under 365nm. Macbeth Evans was one of the most notable glass makers to produce these “ghostly glowers”. But, this is where is gets tricky! Because manganese also fluoresces under a 365nm light, the only way to positively confirm if something is Uranium Milk Glass is to test is with a geiger counter.

*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 type of Ultraviolet light and the color of visible light is determined by its wavelength. The unit of measurement for light wavelengths is the nanometer (nm). Ultraviolet light is generally considered to be from 200 nm to 400 nm.