What is "uranium glass" ?

Uranium glass is a colored glass, made by adding a small amount of uranium into a base glass.
It has a typical color tone, i.e., either light yellow or light green.
The glass has, however, a unique and beautiful shine, due to the fluorescent effect of uranium contained in the glass.
For instance, the specific shine makes it possible to identify easily this type of glass pieces exhibited among the other ordinary colored glasses.

Since the middle of the 19th century, people in Europe as well as the US very much cherished the uranium glass.
Indeed, it was then the most popular colored glass in those countries.
Thus, almost any kind of articles that could be made of glass was produced also by using the uranium glass.
Production of the glass continued until the middle of the last century and as a result, a large amount of the glass was produced.

The uranium glass was called by various names, primarily based on its specific colors.
For example, popular German names are "Annagelb" for yellow glass and "Annagruen" for green glass.
In the UK and the US, a common name used is "Vaseline glass".

Readers of the home page may concern about the radioactivity associated with the uranium glass.
The radioactivity of a usual uranium glass piece is, however, of approximately the same order in magnitude of the radioactivity that is naturally contained in a human body.
Therefore, it is not needed at all to worry about its effect on the health of people.
For more detailed information concerning the radioactivity of uranium glass, please see Appendix. (Radioactivity)

This gallery displays colored photographs of various uranium glass articles.
Please visit the gallery. (Gallery)