What is Vaseline Glass?

Vaseline (uranium) Glass

Vaseline Glass saw its height in popularity during the Victorian era.

Vaseline Glass is a particular color of yellow-green glass that is made by adding 2% Uranium Dioxide to the ingredients when the glass formula is made. The addition of the Uranium Dioxide makes the glass color yellow-green.

Vaseline Glass is ALWAYS verifiable by using an ultraviolet light (blacklight) on the glass item. When this is done, the glass turns a bright florescent GREEN! Sometimes, even the most trained eye can be fooled by a piece of glass that looks like Vaseline Glass, but will not 'glow' or fluoresce bright green under a blacklight.

Not all yellow-green glass will turn florescent GREEN when a UV light is shined on it. When manganese is added to the glass formula (which also makes a yellow-colored glass) instead of Uranium Dioxide, for instance, the end product will glow under a black light, but the color is an orange/peach color OR a lime green color that is much fainter than the bright neon green under UV light.

Manganese was added to the glass mixture to counteract the minor traces of iron that would give the glass a 'coke-bottle' greenish tint to it. This is not considered vaseline glass. CLICK HERE to see an example!
Vaseline Glass is not harmful, as the emissions from the glass are just slightly stronger than normal background radiation that we are all exposed to on a daily basis.

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