Is all Vaseline glass uranium glass?

Vaseline glass containers are clear, yellow or yellowish-green glass pieces made with 0.1% to 25% uranium dioxide. Many different kinds of glass can have a yellowish-green hue, but the thing that sets Vaseline glass apart from the rest is the fact that it glows green when it is exposed to UV light.

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.

How do I know if I have Vaseline glass?

Is Vaseline glass only green?

In other words; The fluorescence of vaseline glass is always green. Either red/orange fluorescence or blue/greenish-blue fluorescence means NOT vaseline (or uranium) glass. A portable ultraviolet rays lamp is so called a "BLACK LIGHT", and you can buy in a large electric appliances store.

What brands made 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.

What is Uranium Glass, and Is It Different From Vaseline Glass?

Is Vaseline glass Depression glass?

We know depression glass. Vaseline glass is yellow-colored depression glass. It gets its name from its petroleum jelly-like hue. Vaseline glass experienced its heyday between the 1880s to the 1920s, according to Studio Antiques.

Does Vaseline glass glow?

Vaseline glass, or canary glass, contains a small amount of uranium. This gives the glass its yellow-green color. It also makes the glass glow bright green under a black light.

Does yellow Vaseline glass glow?

The yellow or yellow-green, greasy appearance of petroleum jelly gives Vaseline glass its name. Its color comes from a small amount of uranium oxide content. This type of glass, according to Sue C.

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 carnival glass the same as uranium glass?

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.

What era is Vaseline glass?

What we identify as vaseline glass was produced from the mid-1800s through the beginning of World War II, but its peak of popularity was from the 1880s through the 1920s. Large companies like Fenton Glass and Mosser Glass made these wares, along with some other smaller shops.

What glass glows orange under black light?

Reddish orange manganese glass is sometimes called “persimmon glass.” Manganese Dioxide (MnO2) was also used to decolorize glass containing iron impurities, or to stabilize the color of glass so it wouldn't shift over time. Glass that contains manganese glows green, red, orange, or peach under black light.

What glass glows purple under black light?

Hard-paste porcelain should fluoresce a deep blue or purple color, while soft paste will glow white. But before buying or selling a nice piece of porcelain, always take it into a darkened room with either a handheld or keychain black light to test for repairs.

How much is uranium glass worth?

The rarity of a Uranium glass piece features a great impact on the piece's overall value. A uranium glass piece that is extremely common can cost under $100. On the other hand, a rare uranium glass piece can set you back $10,000+.

What Colour is uranium glass?

The most common color of uranium glass is pale yellowish-green, which in the 1930s led to the nickname "Vaseline glass", based on a perceived resemblance to the appearance of Vaseline-brand petroleum jelly as formulated at that time.

When did uranium glass stop being made?

Uranium glass was produced regularly until just before WWII, when the US government halted production as uranium became highly regulated. This moratorium lasted until 1958, when uranium oxide was deregulated, and uranium glass has continued to be produced ever since (Collector's Weekly n.d.).

Does carnival glass contain uranium?

​The reason for the glow is that the glass batch contains uranium dioxide as a colorant, and when exposed to ultra-violet light, the electrons in the glass are “excited” which causes that magical glow (known as fluorescence).

What is the most valuable Depression glass?

Royal Lace (1934–1941)

The most sought after pattern of Depression glass is arguably Royal Lace, which was made by the Hazel-Atlas Glass Company. This pattern was manufactured in green, pink, crystal, and most notably, cobalt blue.

Did Fenton make Vaseline glass?

Fenton: First started making vaseline glass in 1930's. Hobnail pattern started in 1941. Cactus pattern (original to Greentown Glass) was re-introduced 1959. Fenton is still producing limited supplies of vaseline artglass today.

What is pink Depression glass?

Pink Depression Glass. Credit: skhoward. Unlike its finer crystal counterparts, which were cut and often hand-finished, Depression glass pieces were molded and featured raised patterns (of which there were more than 100).

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 can you tell if Depression glass is real?

Look for tiny bubbles on the surface of the glass.

If it is a real piece of depression glass, there will be a scattering of small bubbles. The bubbles are about the size of a full stop at the end of a sentence. Replica pieces of depression glass don't have this distinguishing flaw.

What is the difference between Depression glass and carnival glass?

Both carnival and depression glass are colored. However, carnival glass features an iridescent, multicolored look, whereas depression glass has more of a simple, single-colored, transparent look. Carnival glass was made to inexpensively mimic glass made by the Tiffany Company.