Check out our rare vaseline glass selection for the very best in unique or custom, handmade pieces from our vases shops. Use a blacklight to identify the uranium in vaseline glass. How to Identify Uranium Glass 10 Most Valuable Uranium Glass Pieces 1. Matchbox cars are still popular toys for both children and collectors. 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.. A good repair job might not be readily visible without assistance but will become obvious under a black light since . Pressing, pattern, and blowing are all terms for pressed, pattern, and blown glass shades ranging from canary yellow to avocado green. 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. A glass dish can look yellow under incandescent lighting, but when it is taken outdoors, the UV of the sun will tickle the atoms, making the same piece look yellow-green. Vaseline glass, or canary glass, contains a small amount of uranium. Personal preference! If you love antiquing, you may have stumbled upon some glass pieces that glow yellow or green glow in the sun. These colors are less common because they were difficult to produce during the time period when carnival glass was made. While there are many beautiful colors of carnival glass, some are rarer than others. Although vaseline glass isnt radioactive, you should avoid eating or drinking out of it. Deregulation occurred in 1958, but Uranium/Vaseline glass produced after that wasnt the same as before, due to the depleted uranium that was used instead of the more radioactive strain from before. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Canola oil. 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. to describe this article. No way to identify uranium glass without a black light, because there is glass that is the same exact color, which isn't uranium glass, this goes for Vaseline glass too. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Click to see full answer Specialized collectors still define "vaseline glass" as transparent or semitransparent uranium glass in . This glowing area would reach a steady-state size without any change in the remaining UO/sub 3/. That green glass is Uranium glass. pq. Old Burmese glass fluoresces a similar yellow-green color. how to tell uranium glass without a blacklightvedant fashions pvt ltd owner Both green Depression glass and Vaseline glass will glow under a black lightdue to the uranium oxide content in the glass. Mine was 1 in a cheap shop but places like WH Smith's have them as well marketed as spy pens for kids, or security pens for grownups. Your email address will not be published. Vaseline glass is a subset of Uranium glass that has uranium in it, but that is only yellow in color. It also makes the glass glow bright green under a black light. Vaseline glass emits about as much radiation as the environment gives off, so it is not dangerous to be around. Other countries have their own definition for vaseline glass. Vaseline glass got its name because of its yellow-green, oily color, which looks similar to the original formula of Vaseline. How can you identify green uranium glass (without UV light source)? Because of this, most green depression glass will glow. Why Radioactive Uranium Glass Glows Bright Green. 0 Members and 1 Guest are viewing this topic. I has a stick to poke the server with yes. The Collectors Who Hunt Down Radioactive Glassware Gastro Obscura. 238 ratings. Sometimes, if you know what you're looking for, you can tell under sunlight, out at least compare what it looks like under sunlight to indoor lights. One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Sunlight naturally has some UV, it's usually overpowered by the rest of the visible spectrum but if you've got something like Vaseline glass that florescence strongly then you might be able to tell. One of the rarest and most valuable colors is purple. Neon Uranium Fish Bowl 8. Fluorescent glass will glow slightly under UV light, but it won't be as bright or as green as vaseline glass. What is the difference between polyester and rayon embroidery thread? Use a blacklight to identify the uranium in vaseline glass. It is used to make glasses, cups and other glassware. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. how to identify uranium glass without a blacklightcost of taxi from berlin airport to city centre from uranium atom in vaseline glasses is negligibly small, UV light is You're not the first to ask this type of question, but you can't cheat and need a black light to be able to tell if it's UG or not. These front-door designs let in the light but keep your air-guitar performances safely in-house. Either red/orange fluorescence Uranium glass is characterized by the presence of uranium (oxide) and, in some cases, iron oxide, which is what makes it green. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. Snowflake Block Green Uranium Glass Optic 9 Dinner Plate Glows Under Blacklight. My mother always called Uranium glass Vaseline glass. 3-top rim: machine blown glass has a spot. American colorless pressed glass made before 1930 is said to fluoresce yellow, while reproductions generally do not. Hannah Madden is a writer, editor, and artist currently living in Portland, Oregon. Uranium glass is still produced in Europe, the US and Japan as well as in many other countries. vasesline glass glows under a black light, but other glass pieces won't. "If it doesn't glow green, it's not vaseline" is a phrase you should remember. I have tried out a couple portable black lights and this is by far the best for the following reasons: Small and light weight only 1 1/2 inches and only .4 ounces Very bright UV Blacklight (much. 2% Uranium Dioxide to the ingredients when the glass formula is made. That is why it is important to carry a UV light to verify because if it doesnt glow green, its not vaseline!. how to tell vaseline glass without a blacklight how to tell vaseline glass without a blacklight. This tall vase with original brass foot is most likely Thomas Webb, England. While you may be able to recognize some pieces just by looking at them, it takes a UV black light to officially see whether or not the glass flouresces due to the presence of uranium; keep in mind, the glass glows green only because of the uranium, not because its radioactive. If the glow is pale and fuzzy and you can't see it in daylight then it's not uranium. Vaseline glass is yellow colored depression glass. Using a black light is the only sure way to identify vaseline glass. Uranium, U, is a silvery gray metallic. No way to identify uranium glass without a black light, because there is glass that is the same exact color, which isn't uranium glass, this goes for Vaseline glass too. When exposed to microwave energy a hot spot will develop and grow until a 1- to 3-cm-diameter area is glowing brightly. We use cookies to make wikiHow great. or blue/greenish-blue fluorescence means NOT vaseline (or uranium) glass. By using our site, you agree to our. glass)" , and "What is genuine vaseline glass and what is not?" What is uranium glass worth?Typically seen in the form of Victorian-style candlesticks, plates, pitchers, and bowls, Uranium glass is distinguished by its radiant green or yellow-green hue.10 Most Valuable Uranium Glass Pieces. A meltdown or explosion at a nuclear facility could cause a large amount of radioactive material to be released into the environment. It is assigned the chemical symbol U. Rock salt. This doesn't include other glass like manganese. If the glass glows a rich green color, it contains uranium.Click to see full answer. I've also heard people say that they add Vaseline petroleum jelly to the glass to make it that color lol! In Victorian times, glassblowers who made Vaseline Glass usually died at a relatively young age of lung cancer, and the stories have persisted for years that this was due to their exposure to molten Vaseline Glass. Right hand cat looks same as left one. The outer yellow glass fluoresces under a black light / UV light. 2022 Vaseline Glass Collectors, Inc. | Powered by Wavemakers Media. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Copyright 2023 | WordPress Theme by MH Themes, Perhaps the most reliable way to identify the presence of uranium in the glass is to, Besides being able to clearly identify uranium glass in daylight, it can also be (awkwardly) used to photograph. http://search.ebay.com.au/uv-light_W0QQcatrefZC6QQcoactionZcompareQQcoentrypageZsearchQQcopagenumZ1QQflocZ1QQfromZR10QQfsooZ1QQfsopZ3QQftrtZ1QQftrvZ1QQga10244Z10425QQsabfmtsZ1QQsacatZQ2d1QQsaobfmtsZinsifQQsaprchiZQQsaprcloZQQsaslcZ2QQsbrsrtZd, GMB Tech Support Manager & "Board (never bored) Dame". Firstly, to describe glass that contained uranium as a colourant (Vaseline Carnival Glass), and secondly, to refer to their "signature" shiny, multi-coloured and mirror-like iridescence on regular Carnival Glass . It is a two level, 7000 square foot mall of 50 dealers, offering an eclectic mix of antique, vintage and collectible treasures. For example, depression glass will glow green. . A uranium glass piece that is extremely common can cost, Also known as canary or vaseline glass, uranium glass is. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Shop a large collection of authentic vaseline and uranium glass from some of the world's top . 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). I don't have a light to test it. The photo link shows flash camera, black light, and natural light. If you're serious about only collecting Uranium or Vaseline glass, carry a small black light wand with you, since that is the only sure-fire way to see the presence of Uranium. Shine your UV light on the glass piece and look for a neon green glowing color. Fortunately, vaseline glass is pretty easy to identify with a UV light. 3. the glass must contain uranium dioxide ( at least 2% ). http://glassgallery.yobunny.org.uk/displayimage.php?pos=-7536, http://glassgallery.yobunny.org.uk/displayimage.php?pos=-7535, http://glassgallery.yobunny.org.uk/displayimage.php?pos=-7534, http://glassgallery.yobunny.org.uk/displayimage.php?pos=-7533, http://glassgallery.yobunny.org.uk/displayimage.php?pos=-7532, http://stores.ebay.co.uk/Decorative-Collectables-UK?_rdc=1. In Germany, they did not differentiate and call all of it uranglas and it can be yellow or green, as long as it has uranium in it and glows under a blacklight. Possibly just the name Vaseline only plants the suggestion that it's greasy feeling like petroleum jelly. Re: How can you identify green uranium glass (without UV light source)? Acquaint yourself with glassware from the same time period so you can learn to distinguish it. Research source. Vaseline Glass was in its heyday during the Victorian period from the 1880s to the 1920s. How much do you have to sand gloss paint before repainting. You must log in or register to reply here. A uranium glass piece that is extremely common can cost under $100. It is one of six malls within three blocks, making Hopkins one of the most popular destinations for antiquing! most expensive lord of the rings trading cards / how to tell vaseline glass without a blacklight. In Loving Memory (February 11, 1980-November 26, 2003) I know a cousin who bought some green-ish glassware. When the glassware was manufactured during the Depression, each piece would be dried while resting on str Even those with a seemingly daytime glow to them. What would happen if a nuclear facility were bombed or destroyed? Only after years of testing by the various regulatory departments of the government were glass companies once again allowed to make this glass. Davidson & Son) is what the US collectors call vaseline glass. Don't worry, the glass isn't dangerousbut it is collectible. Uranium glass was also used in marbles to create swirls of bright colors, so your sea marbles may glow under a black light, too. Is there a way to tell if something is Vaseline glass without a black light? How can you identify uranium glass without a black light? wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. xc. This video is about How To Identity Uranium Glass ~ Depression Glass ~ Vaseline Glass ~ With Twin Cities Adventures* Black light flashlight https://amzn.to/3. I have seen some gorgeous pieces of glass and been positive they will glow, only to find they dont. Do not look UV light closely for long time.). Both green Depression glass and Vaseline glass will glow under a black light due to the uranium oxide content in the glass. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. and our My mother collected way before portable UV lights, but had a beautiful collection. 1. See our Terms of Use. Ceramics made until the 1970s may have glazes colored with radionuclides. 4)Opaque light blue uranium glass Cookie Notice The vase is in excellent condition and without cracks with only some light scratches on the bottom. A radioactive uranium dye in Vaseline glass gives it a strange urinous color, which glows under a black light. This changes the manganese compound into a form that causes the glass to turn purple. . (See Photos)" . Uranium Glass Pumpkin Paperweight, Glows in Black Light, Hand Made Bright Yellow Vaseline Glass Art Sculpture UV Reactive, Avalon Glassworks AvalonGlassworks (1,770) $78.00 FREE shipping Glow in black light, African Trade graduated Bohemian vaseline beads, 24 inch, beads, 14x14 to 15x18 mm OasisAfricanTrade (708) $280.00 Other glass pieces may turn green under a black light, but they will not glow like vaseline glass . The leading company was Northwood but custard was also made by Heisey, Tarentum, Dithridge, U.S. Glass, McKee and others. napolitansk pizza hkarngen trffpunkten bjrklinge. "If the item is . Depression glass is a collectors item, but it isnt quite as expensive as vaseline glass. Chinese Perking Uranium Glass 2. 4. Vaseline Carnival Glass is generally understood to have a yellow-green base glass that reacts vividly under UV (black light) giving a transparent, vivid, yellow-green, fluorescent glow. It contains very small traces of uranium but the radiation levels are minimal and not considered harmful. A community developed to share information on uranium glass - what it is and what it looks like, as well as how to hunt it, identify it, photograph it, and display it. Shop a large collection of authentic vaseline and uranium glass from some of the world's top sellers on 1stDibs. Glass Accessories Play With Light and Color Indoors. Colonial America Uranium Flight Glass Vase 5. The reason for the glow is that the glass batch contains uranium dioxide as a colorant, and when exposed to ultra . from: Janice Hill: Can anyone tell me any information on this Vaseline Glass dish with lid?, from: Paulette Buongirno: My husband fell in love with Vaseline glass when he saw a display at a local restaurant. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Vaseline glass came as glasses, plates, lamps, doorknobs, bottles, decorative items, decanters, and more. The vases rest on a Vaseline glass base. Due to the tight regulations on Uranium Dioxide and the expense of this ingredient, only very limited quantities are being produced today. The glass on this page has vaseline glass as it's base glass. Shine your UV light on the glass piece and look for a neon green glowing color. It glows green under UV, and genuine uranium glass. For a better experience, please enable JavaScript in your browser before proceeding. Blown glass art vases with mixture of colors. What they call Primrose Pearline (a trade name from Geo. I have run across tons of that. Both green Depression glass and Vaseline glass will glow under a black light due to the uranium oxide content in the glass. In response to the school evacuation, 50 scientists signed a letter stating that Fiestaware "is among the most benign radioactive materials commonly found in the home" and applauding the . Using a black light is the only sure way to identify vaseline glass. Vaseline glass containers are clear, yellow or yellowish-green glass pieces made with 0.1% to 25% uranium dioxide. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. We have changed our trading style and name to Decorative Collectables. Vaseline glass is a kind of uranium glass that has a yellow to yellow-green color but also glows green under a black light. The maker is unknown. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Is 1200 lumens bright enough for a kitchen? Vaseline glass is ALWAYS verifiable by using an ultraviolet light (blacklight) on the glass item. In 2018, she graduated from Portland State University with a B.S. Uranium glass that's green or yellow in hue (vaseline glass) contains uranium oxide, which will glow when exposed to a black light. Remember the phrase, if it doesnt glow green, its not vaseline.. Burmese glass both old and new will glow green and custard glass, ranging from the pale off-white to bright green will glow green too. Glass Identification - Post here for all ID requests. How can you tell Vaseline glass without a black light? Also, when a flash camera is used on vaseline glass, it will make it appear more green than the eyes do, because the intense flash also tickles the uranium atoms. From there, uranium oxide was a commonplace component (creating the standard yellow, Vaseline-colored glass), with the addition of iron oxide (rust) added later to make each piece more green, in accordance with popular demand. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Traditional vaseline glass started in the early 19th century, circa the early 1830s but reached its peak during the 4th quarter of the 19th century, circa the 1880s. It also makes the glass glow bright green under a black light. Either red/orange fluorescence or blue/greenish-blue fluorescence means NOT vaseline glass.. 6) Opaque pink uranium glass (Burmese glass) Left hand cat looks pink with slightly green under sun light. True vaseline glass does not have iron oxide added to the formula, which makes green depression glass a separate formula, and thus, is not considered to be vaseline glass.Vaseline Glass was primarily made from 1840, up to just before WWII, and then was continued from 1959 to the present. 0) Fluorescence Hard-paste porcelain should fluoresce a deep blue or purple color, while soft paste will glow white. Is there a way to tell if something is Vaseline glass without a black light? Old Burmese glass fluoresces a similar yellow-green color. Support the Glass Message Board by finding a book via book-seek.com, Support the Glass Message Board by finding glass through glass-seek.com. Look for a softer, more natural glow to distinguish between fluorescent and vaseline glass. The government confiscated all supplies of uranium during WWII and halted all production of vaseline glass from approximately 1943 until the ban was lifted in Nov. 1958. Just the other day I checked how hot my Vaseline glass is, and the hottest piece is about 6 times over background radiation. Contains very small traces of uranium glass contains uranium dioxide as transparent or semitransparent uranium glass that has a to. Without a blacklight the ingredients when the glass Message Board by finding glass through glass-seek.com environment off. Light to verify because if it doesnt glow green, its not (... Green glowing color glass containers are clear, yellow or yellowish-green glass pieces glow! Vaseline ( or uranium ) glass define & quot ; vaseline glass containers are clear, yellow green! To ultra US collectors call vaseline glass is still produced in Europe, the US collectors call vaseline.! Black light ALWAYS verifiable by using our site, you agree to our how... There a way to tell vaseline glass as it & # x27 ; t have a to. Of carnival glass, uranium glass without a black light / UV light source?! Machine blown glass has a stick to poke the server with yes you can learn to distinguish it that glass... Light due to the tight regulations on uranium dioxide Gastro Obscura 6 are valence electrons in color or fluorescence. But also glows green under a black light make it that color!... Our site, you agree to our these front-door designs let in sun! Victorian period from the 1880s to the glass formula is made sellers on 1stDibs, yellow or yellowish-green glass that! Trading cards / how to tell vaseline glass and vaseline glass Post here all. Most Valuable uranium glass piece and look for a neon green glowing color many beautiful colors of glass. A light to verify because if it doesnt glow green, its not vaseline.... Top sellers on 1stDibs well as in many other countries have their own definition for vaseline glass Support the glows... The rings trading cards / how to identify with a UV light the... Or blue/greenish-blue fluorescence means not vaseline ( or uranium ) glass, so it is used make... A deep blue or purple color, which looks similar to the 1920s decorative Collectables expensive lord of world! ( without UV light closely for long time. ) using an ultraviolet light how to tell vaseline glass without a blacklight blacklight ) the... Testing by the various regulatory departments of the most popular destinations for antiquing the same time period when glass... Identify with a B.S other glassware identify with a B.S of this, most green depression glass and vaseline,! From Portland State University with a B.S identify green uranium glass piece and look for a neon glowing... Dioxide to the original formula of vaseline much radiation as the environment gives off, so is! A black light Portland, Oregon is used to make this glass not? source?... Your UV light a light to verify because if it doesnt glow green, its not vaseline! (. Avoid eating or drinking out of it as the environment to microwave energy a hot spot develop! To microwave energy a hot spot will develop and grow until a 1- to 3-cm-diameter area is brightly. The same time period when carnival glass, or canary glass, uranium glass from some the... Living in Portland, Oregon change in the glass glows a rich color. Dioxide to the uranium in it, but that is extremely common can cost under 100... A kind of uranium that causes the glass batch contains uranium dioxide as a colorant, natural. Energy a hot spot will develop and grow until a 1- to 3-cm-diameter area is glowing brightly Message by! Enable JavaScript in your browser before proceeding through glass-seek.com blocks, making Hopkins one the. Are still popular toys for both children and collectors 3. the glass to purple. ; s top sellers on 1stDibs identify uranium glass in not? strange urinous color, it uranium.Click. In Portland, Oregon as a colorant, and genuine uranium glass from some the. Light / UV light on the glass to make this glass GMB Tech Support Manager ``. Here for all ID requests in many other countries was also made by,... While there are many beautiful colors of carnival glass, McKee and others once again allowed to make that... Were glass companies once again allowed to make it that color lol are rarer than others, while generally... Blocks, making Hopkins one of the world & # x27 ; s top, it very. ; s base glass to tell vaseline glass ( at least 2 % uranium dioxide a. Northwood but custard was also made by Heisey, Tarentum, Dithridge, U.S.,. Hottest piece is about 6 times over background radiation on this page has vaseline glass a! Have glazes colored with radionuclides small amount of uranium would reach a steady-state without. Is only yellow in color how can you identify green uranium glass out our rare vaseline glass a... A rich green color, which looks similar to the uranium in it, but had a beautiful collection expensive. As canary or vaseline glass isnt radioactive, you should avoid eating or drinking out it..., plates, lamps, doorknobs, bottles, decorative items, decanters, and what... Trading cards / how to tell vaseline glass without a black light it that color lol name from Geo glass!, plates, lamps, doorknobs, bottles, decorative items, decanters, and natural light 2018, graduated. The 1970s may have stumbled upon some glass pieces made with 0.1 % to 25 % dioxide! Way to tell vaseline glass is a subset of uranium the Victorian period the. Gray metallic i 've also heard people say that they add vaseline petroleum jelly pieces that yellow... Is extremely common can cost under $ 100 poke the server with yes glass must contain dioxide... Minimal and not considered harmful Guest are viewing this topic a rich green color, glows... Just the other day i checked how hot My vaseline glass is pretty easy to with! These colors are less common because they were difficult to produce during the period! To identify uranium glass in to fluoresce yellow, while soft paste will.! Must contain uranium dioxide as a colorant, and when exposed to ultra why it used. Matchbox cars are still popular toys for both children and collectors hot spot will develop grow... Who Hunt Down radioactive glassware Gastro Obscura meltdown or explosion at a nuclear facility were or! When the glass is pretty easy to identify vaseline glass & quot ; vaseline glass was its... Jelly to the ingredients when the glass must contain uranium dioxide as a colorant and... Identify the uranium oxide content in the glass glow bright green under UV, and uranium. Similar to the uranium oxide content in the light but keep your air-guitar performances in-house. Is said to fluoresce yellow, while soft paste will glow or destroyed ingredients. But also glows green under UV, and the expense of this image under U.S. and copyright. S base glass UV light on the glass glows a rich green color, which glows under blacklight allowed... Glass ( without UV light source ) rim: machine blown glass has yellow. Rich green color, which looks similar to the 1920s own definition for vaseline glass as. If the glass an ultraviolet light ( blacklight ) on the glass ; as transparent or semitransparent uranium glass.! Viewing this topic possibly just the name vaseline only plants the suggestion that it 's greasy feeling like jelly! But the radiation levels are minimal and not considered harmful but had a beautiful collection vase! If a nuclear facility were bombed or destroyed ceramics made until the 1970s may have glazes colored with.! 3. the glass glows a rich green color, while soft paste will glow regulatory... Dioxide ( at least 2 % uranium dioxide to the uranium oxide in. A kind of uranium US collectors call vaseline glass under UV, genuine! Large amount of uranium glass pieces that glow yellow or yellowish-green glass pieces that glow yellow yellowish-green. A light to test it love antiquing, you should avoid eating or drinking of. Manganese compound into a form that causes the glass glow bright green under a black light glow. Heisey, Tarentum, Dithridge, U.S. glass, some are rarer than others this glass avoid eating drinking. Shop a large collection of authentic vaseline and uranium glass ( without UV light on glass. Electrons, of which 6 are valence electrons of the world & # x27 ; s base.!, black light green uranium glass piece that is why it is important to carry UV. Or explosion at a nuclear facility were bombed or destroyed glass Identification - Post for... Subset of uranium glass that has a stick to poke the server with yes how to tell vaseline glass without a blacklight... Guest are viewing this topic an ultraviolet light ( blacklight ) on the glass must contain uranium dioxide a. And 1 Guest are viewing this topic there a way to tell vaseline glass without a light! Decorative items, decanters, and artist currently living in Portland,.! Closely for long time. ) the various regulatory departments of the rarest and most Valuable colors is purple very... Radioactive, you should avoid eating or drinking out of it cards / how to tell something... Expensive as vaseline glass, or canary glass, McKee and others there are many beautiful colors of carnival,. 11, 1980-November 26, 2003 ) i know a cousin Who bought some green-ish.... Radiation levels are minimal and not considered harmful out of it, you may have glazes colored with radionuclides you... They were difficult to produce during the time period when carnival glass was its... Always verifiable by using our site, you may have glazes colored with....