American colorless pressed glass made before 1930 is said to fluoresce yellow while reproductions generally do not.
Marbles that glow under black light.
The selling point wasn t the glow which is something enjoyed by modern collectors but much more subtle coloration.
The marbles are perfectly safe to handle though because the uranium has been encased.
920s nobody was walking around with a pocket black light to make their marbles glow so the novel appearance of marbles in such a situation would not have been a consideration.
Old burmese glass fluoresces a similar yellow green color.
The secret is the composition of the glass.
Tooth whitener or other enamel product used on our teeth will glow under black light.
Scorpions glow in black light the emperor scorpion has a dark color on human naked eyes but when it is under the black light it become blue green colored.
Why do some vintage marbles shine brilliantly and some simply react to the presence of the black light like any other glass.
When illuminated by ultraviolet light the glass shines an intense and stereotypically radioactive green.
Some people report that american brilliant cut glass also casts a yellow hue.
This entry was posted on sunday march 14th 2010 at 5 37 am and is filed under marbles.
Many vintage marbles were manufactured with uranium infused glass.
Some vintage marbles will glow under black light because they were made with a small quantity of uranium.
Then flip on the black light and be surprised.