database. Fenton Art Glass was well-known for its glass-working techniques and the many colors it produced, some of which used uranium 238, which is radioactive. ... Uranium was first used to color glass in the 1830s and it has continued to be used for this purpose with the exception of a 15-year period beginning in 1943.

Does Fenton make uranium glass?

Boyd Glass and Fenton Art Glass are two USA companies that produce uranium glass items today. It is not widely known that the "Burmese" glass made by the Mount Washington Glass Company from the mid 1880's, contained uranium.

When was Fenton uranium glass made?

Fenton's opaque Venetian Red Glass first appeared in 1924. During the 1930's and 1940's, Fenton produced practical items, such as mixing bowls and tableware to get through the depression and WWII shortages.

Is Fenton uranium glass safe?

Uranium glass also fluoresces bright green under ultraviolet light and 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.

How can you tell if a glass is uranium?

Perhaps the most reliable way to identify the presence of uranium in the glass is to expose it in the dark to a source of ultraviolet light (e.g., a black light). If the glass glows a rich green color, it contains uranium.

Making uranium glass

22 related questions found

Does pink Depression glass have uranium?

Based on appearance, it's easy to confuse Uranium glass with Depression glass, but Depression glass does not have any uranium in it, so it doesn't glow.

Is Vaseline glass the same as uranium glass?

A: Vaseline glass is a specific type of uranium glass. It got its name from its distinctive yellowish color, which looks like petroleum jelly. It is also sometimes referred to as canary glass because of its yellow color.

Can uranium glass blue?

So, this is genuine uranium glass. (Product of MOSSER Glass Inc of USA.) This glass is non-transparent, and pale-blue color under sun light.

Is it safe to wear uranium glass?

When present in glass, uranium imparts a yellow color and makes it very heavy. It would be a VERY BAD idea to cut uranium glass without knowing more about your piece. ... It's actually not the uranium that makes the piece dangerous but other elements found in the uranium ore.

What is Fenton uranium glass?

Uranium glass, otherwise known as Vaseline glass, is a term for the transparent yellow to yellow-green glass that owes its color to its uranium content. ... Another type of glass produced by Fenton Art Glass, Burmese, also incorporates uranium dioxide. Burmese glass is a type of opaque glass that fades from yellow to pink.

Are all Fenton glass pieces marked?

The majority of Fenton was only marked with a sticker. Most of the stickers have been lost or removed over time. I believe my piece is Fenton made after 1970 but I can't find a mark, could it still be Fenton? Yes, some types of glass and treatments on glass can obscure or remove the mark entirely.

What happened Fenton glass?

After three auctions scheduled in May and June for tools, fixtures and other items, the factory will be demolished later this year to make room for a new school. Fenton said the Fenton Art Glass Co. is no longer active. ... factory operated for over a century in Williamstown, before closing in 2011.

What is Vaseline glass worth?

Vaseline Glass Values

Many individual pieces of Vaseline glass sell in the range of $20 to $50, but they can be worth more or less depending on a number of factors. The condition of the piece is very important, with scratches, chips, and repairs having a negative effect on value.

Is Fenton custard glass uranium glass?

Custard glass is a Victorian era opaque, off white or ivory coloured glass, that uses uranium oxide in the glass mixture to give a slight green or yellow tint. As a result of the uranium, custard glass glows a bright green colour when exposed to UV light.

Does Carnival Glass have uranium?

7) Uranium Glass

Also called Vaseline glass, these pieces are usually yellow or green and have graced many an American table. As part of the carnival glass craze, these pieces were often given as prizes at fairs in the 1930s. ... Other colors like blue, aqua, and even red have been found to contain uranium.

Why does uranium glow?

According to Collectors Weekly, the fluorescence is due to the UV light exciting the uranyl compound in the glass, causing it to give off photons as it settles back down. Yellowcake is solid uranium oxide. This is the form in which uranium is commonly sold before it is enriched.

What is manganese glass?

Manganese is one of the oldest glass additives, and purple manganese glass was used since early Egyptian history. Manganese dioxide, which is black, is used to remove the green color from the glass; in a very slow process this is converted to sodium permanganate, a dark purple compound.

How is milk glass made?

FORMULAS. Milk glass is most often made with tin dioxide as the “opacifier” along with arsenic and other ingredients, but there have been many other elements or compounds used as opacifiers, such as titanium oxide, zirconium oxide, fluorspar, cryolite, antimony, sulfates, chorides, etc.

Can you microwave uranium glass?

Uranium glass is not going to explode unless you heat it in the microwave. But this is too cool to pass up! Find this Pin and more on Pop Rocks by The Lynnertic.

How can you tell uranium glass without a black light?

Find fluorescent glass by looking for a softer glow.

Fluorescent glass will glow slightly under UV light, but it won't be as bright or as green as vaseline glass. Look for a softer, more natural glow to distinguish between fluorescent and vaseline glass.

Does green Depression glass contain uranium?

Though green Depression era glass contains Uranium oxides, the formula used to make it also included iron oxide. It was made with an entirely different formula than that used to make Vaseline glass.

What is dark blue glass called?

Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense colouring agent and very little is required to show a noticeable amount of colour.

How do you make uranium glass glow?

For hundreds of years, glassmakers used small amounts of uranium to create yellow or green glass. The yellow tint of this glass led to the nicknames “Vaseline glass” and “canary glass.” Under an ultraviolet (UV) or “black” light, the uranium causes the glass to glow bright green.

What glass glows under black light?

Vaseline glass gets its oddly urinous color from radioactive uranium, which causes it to glow under a black light. Everyone who collects Vaseline glass knows it's got uranium in it, which means everyone who comes in contact with Vaseline glass understands they're being irradiated.

Does uranium glow in the dark?

The short answer to your question is "no," radioactive things do not glow in the dark - not by themselves anyway. Radiation emitted by radioactive materials is not visible to the human eye. ... Many substances will emit visible light if "stimulated" by the ionizing radiation from radioactive material.