Ray Johnson, CHP, Ask the Experts is posting answers using only SI (the International System of Units) in accordance with international practice. 1895-1910 then again as kitchen glassware, ca. Harry Northwood is one of the most well-known figures in American pressed glass. Furthermore, to make sure that the signature is original, compare it with the signature of … Peripheral necklace has light amber color under sun light, and glows orange under UV. Vaseline glass has now become a generic term that is used in the United States, which goes to show that the English language is always changing. Both vintage and contemporary Steuben pieces are the frequent target of imitators, and forged marks and signatures are often applied to Steuben lookalikes. In the photo below, the collie on the right is Vasoline. Who can I show that can tell me if real or reconstituted uranium glass? The leading company was Northwood but custard was also made by Heisey, Tarentum, Dithridge, U.S. Glass… Some refer to uranium glass as Vaseline glass, although the two actually differ. Often found in green followed by pink and crystal (clear). How to identify it. Hazel Atlas Glass Co. - ca. These pieces appear slightly oily and commonly have purple or amber as a base color. Last Updated On: December 27, 2020. In natural or indoor light, Vaseline glass has a yellow or yellow-green tinge similar to the color of the old formula of Vaseline petroleum jelly, which is where its name comes from. How To Identify Valuable Carnival Glass by Dr. Lori - YouTube Vaseline glass is glassware that is made with uranium content to give a pale yellow green colour similar to that of petroleum jelly. A 2001 study by the US Nuclear Regulatory Commission indicated that some uranium might be leached from the glass by acids that could result in very small radiation exposures to regular users of the glassware. This is a good question that may concern other people with such glassware. Anyway, this is NOT vaseline glass, (JUDY LEE in USA). The fluorescence of vaseline (uranium) glass is always green. The atom instantly releases its activated energy as visible light of green color. @When the uranium atom absorbs the energy of the ultraviolet(UV) rays, it is activated by the UV energy. Carnival glass items have an iridescent coating and have been pressed in a mold to form different shapes. 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 (which was a yellow-green color) of Vaseline brand petroleum jelly as formulated and commercially sold at that time. A. Vaseline glass, though similar, is transparent. Ensure that the lighting is strong so that you get a real view of the colour. A surprisingly effective fix for knowing if pearls are real is to drop a pearl onto glass and measure the bounce. However, using Vaseline's low melting point to your advantage by using warm water combined with products meant for emulsifying oils can make the process easier. In other words; The fluorescence of vaseline glass is always green. Art Glass 20941 of 21203: 38. The white glass is generally opaque, with hints of blue, pink or yellow showing through. and you can buy in a large electric appliances store.@(Although the radiation Uranium glass glows bright green under UV light. It glows green under UV, and genuine uranium glass. There were two distinctive marks used by Harry Northwood on various pieces of glass. Answer posted on 18 September 2015. _____ How do I tell what the value is by looking at the marks on the pieces? The company produced handmade bottles under the business name “Jeanette Bottle Works Company.” I am looking for something to put on top of it, and I also have a rather large collection of vaseline glass plates, serving platters, ect. Answers are the professional opinions of the expert responding to each question; they do not necessarily represent the position of the Health Physics Society. I am also concerned about the dishwasher she used to clean the Vaseline® glass. Custard glass is a creamy pale yellow opaque glass (mostly pressed) made primarily in America, ca. At least for the time being. OP Where does your interest in flint lie? This list is by no means complete, but just a brief history of a few of the more popular companies to produce Vaseline Glass. Uranium emits radiation energy because it has an unstable nucleus. Shop for-and learn about-Antique and Vintage Fenton Glass and Art Glass. Forged marks are generally quite large and appear on pieces with obvious mold seams. Some of these are almost exact replicas of the real stuff, making the task of picking out the authentic ones all the more difficult. to describe this article. And its green color can not be changed by anyhow, even if mixing with other color glass. Start by looking through the base of the glass to identify the colour accurately. Love it 4. To identify whether a piece of glass is Fenton glass, look for a sticker near the bottom of the item. Above: Flower vases made at the Thomas Webb & Sons factory in England. Feel free to browse our site using the menu above…. Both green Depression glass and Vaseline glass will glow under a black light due to the uranium oxide content in the glass. New tumblers and coasters have the same measurements as old. Transfer of that energy does not cause the nuclei of other atoms to become unstable. A black light will make true uranium glass glow very brightly, while the Geiger counter will indicate the presence of radioactive material. Earlier versions of Vaseline glass were referred to canary glass. Photo via Dave Peterson at VaselineGlass.org Top: The relationship between a piece of glass’s propensity to glow and its uranium content is often not predictable. Regardless of the size of the piece of glass, the mark is quite small, generally about 3/16 of an inch high, about ¾ inches wide, and rarely over one inch long. Put simply, uranium is used to color Uranium glass, and other additives are used for Vaseline glass. Some refer to uranium glass as Vaseline glass, although the two actually differ. You may also see an oval with the word Fenton stamped into the glass if the piece was made after 1970. Parenting is a career, so owning Boyd Glass made this our third career. Uranium oxide was first used as a glass colourant in the 1830s. C.L. Vaseline Glass Collectors, Inc. September 5, 2019 9:55 am Reply I would suggest you post your picture in the visitors post area on the Vaseline Glass Collectors, Inc. Facebook page. The company was founded in 1900, originally producing mouth-blown, etched glass, but converting to mass produced manufacturing in the 1920s. Uranium glass can be detected with a geiger counter, or an ultraviolet (UV) light. uranium. However, it’s … The first, the Northwood "script" signature (Fig.1) originated about 1899 at his Indiana, Pennsylvania plant. Also known as uranium glass, Vaseline glass glows bright green under ultraviolet light, thanks to the uranium oxide added to the glass in its molten state. The vases rest on a Vaseline glass base. Vaseline glass is a recent term that probably dates from the 1950s. The vaseline reproduction was first made in 1972 then made again in 1996. The only worldwide collectors club for this glass, The Vaseline Glass Collectors, Inc., uses the following definition: Photo via Dave Peterson at VaselineGlass.org Top: The relationship between a piece of glass’s propensity to glow and its uranium content is often not predictable. New coasters are identical to originals; the only way to tell new from old coasters is by color. harm to your eyes. This competition is in the form of reproduction glassware made to look like old and collectible pattern glass from the turn of the 20th century, but produced after 1930 or even after 1990. Consumer Products — Radioactive Ceramics and Glass. 1934-1941 Royal Lace Depression Glass Pattern - Jay B. Siegel Most valuable color is cobalt blue. Thus, there is no reason to expect any uranium to remain in the dishwasher. Depression glass and carnival glass … So Sunglass Rob is here to let you know how you can tell if your Costa frames have authentic Costa lenses in them. Vaseline glass is also called "uranium glass," at times, and for good reason. Distinguish Vaseline glass by its unusual yellow-green tint, easily confused with Depression glass. Some may show minor scratches from use. What was once considered uncommon terminology has now become the norm. Canary glass is an even older name that was first used in the 1840s to describe what is now referred to as Vaseline glass. The bottom line is that your cabinet and dishwasher are perfectly safe to use without concern for contamination with uranium. Like it bijoucaillouvintage loves this. Above: Flower vases made at the Thomas Webb & Sons factory in England. Petroleum jelly consists of waxes and mineral oils that melt easily. 4)Opaque light blue uranium glass A pressed glass mold — which can be made up of two to four different pieces — imparts the design directly onto the molten glass that is then cooled and removed from the mold. In its 118 years in business, Steuben was a leader in the luxury glass market. Boyd's trademark is a "B" inside a diamond and found on pie vents, salt containers and other glassware. Red, yellow, Jadite (opaque green) and translucent green were also made. In Art Glass > Show & Tell and Glassware > Vaseline Glass > Show & Tell. Both green Depression glass and Vaseline glass will glow under a black light due to the uranium oxide content in the glass. While some uranium might also be leached during dishwashing, it would be removed with the wash water. Colors of Vaseline Glass (Colors of Unanium Glass) Earlier versions of Vaseline glass were referred to canary glass. I have pink glass. Thus, in order to avail the real benefits of gemstones, ... then use a magnifying glass of at least 10X magnification to find out if the gemstone contains any inclusions. Vaseline glass. http://www.imagesjewelers.com/gia-diamonds.htmlThere are many ways to determine if a stone is a real diamond or another material, like cubic zirconia. Search Vaseline glass manufactures Boyd and Westmoreland. The coloring agent in Vaseline ® glass is uranium which is mixed into the glass at the time of production. Vaseline Glass Identification Guide + Gallery. MYTH: "The stuff they're making these days isn't the real Vaseline Glass. Don’t be fooled by external appearance or texture. Vaseline glass (in the USA) is defined by the VGCI to first, be yellow to yellow-green and second, to glow green under a UV light. Cherry Blossom Depression Glass. But a true collector cannot compromise on authenticity, and hence, in the following lines, we will show you how to tell if a particular Fenton glass is authentic or not. Vaseline glass. Nobody wants fake sunglasses. How to Tell if a Diamond is Real or Fake – Complete Guide. Vaseline is a brand name for petroleum jelly. Vaseline glass is glassware that is made with uranium content to give a pale yellow green colour similar to that of petroleum jelly. However, if your piece does not have any marks or labels, it … A related question that may also be of concern is whether contact with the radioactive Vaseline® dinnerware could cause other materials to become radioactive. Again, the answer is NO. Milk glass was first created in the 16th century but has continued to be manufactured to present day. Answer: You can identify your Depression Glass by checking out marks on the bottom, but you also need to know the pattern. 0) Fluorescence 27-apr-2013 - I love how real uranium vaseline glass glows under black light. A cut glass mold does not impart any designs onto the molten glass. The simplest way to positively identify uranium glass is through the use of a black light and a Geiger counter. To the best of our knowledge, answers are correct at the time they are posted. For instance, people in Australia use the words, ‘vaseline glass’ for any type of glass that has an opalescent rim. At first glance, it may seem difficult to remove petroleum jelly on glass. Hold it to an ultraviolet light. Uranium glass glows bright green under UV light, and this … The vaseline reproduction was first made in 1972 then made again in 1996. The piece at left contains no uranium at all, while the dark piece at bottom-center contains the most of the group. Vaseline Glass Collectors, Inc.,(VGCI), is a non-profit 501(c)3 organization incorporated in 1998 to educate and unify Vaseline Glass collectors everywhere! The following list tells something about the a few of the makers and their glassware. from uranium atom in vaseline glasses is negligibly small, UV light is Vaseline Glass was made by a variety of makers, both during the victorian times and in modern times. The object glows from 2 percent uranium dioxide. How to Identify Vintage-Cut Glass Patterns. I have so much! The Jeanette Glass Company, like most companies who survived the Great Depression, has quite an interesting history.The company began in 1887, in the town of Pennsylvania that shares the company’s name, as a simple bottle company. While today there is general acknowledgment that this wasn’t a great idea, it did make for some striking glassware that is very popular with collectors today. Cherry Blossom is one of the most popular depression glass patterns. 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. Vaseline® co-created with Black women in the spotlight from beauty, sports and the arts to craft Illuminate Me Shimmering Body Oil. Agate will cut glass. The piece at left contains no uranium at all, while the dark piece at bottom-center contains the most of the group. Contact us at: info@vaselineglass.org The vases rest on a Vaseline glass base. The following question was answered by an expert in the appropriate field: I purchased a new home and in one of the cabinets the previous owner displayed a collection of Vaseline® glass dinnerware. This glass is non-transparent, and pale-blue color under sun light. Look for the signature of the glass master on the artwork. It is not illegal and the uranium, while regulated, is available. Here, the members of JUGCC (Japan Uranium Glass Collectors Club) have contributed The uranium glass is described by its color. During those years, we raised two children. The Federal Glass Company produced pressed glass, more commonly referred to as "Depression Glass" in Columbus Ohio. A real Victorian oil lamp is heavy because the glass was thicker, and maker’s marks or names may be embossed on the font itself or on the shade. Forgeries of diamond-tip marks appear most frequently on inexpensive crystal made in Eastern Europe. Since it is part of the glass, the uranium cannot rub off by contact. Milk glass, often used to make lamp bases, is translucent when held up to the light. If you purchase Vaseline glass in a store or from another buyer, ask for verification with the UV light test. Old Burmese glass fluoresces a similar yellow-green color. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice. Other countries have their own definition for vaseline glass. Can I use this cabinet or would it be contaminated? Tell ya what though, there's nothing like the brilliant, long lasting bell peel tone of a well tapped big ol' flint compote. This green light wavelength (550 nano-meter) is unique to the uranium atom. I have vaseline glass. To convert these to traditional units we have prepared a. Music to any died in the wool antiquer. A pontil mark is a mark on the bottom of an item where the punty rod was attached during the glass making process. New coasters are identical to originals; the only way to tell The answer is that NO residual radioactivity will remain in your cabinet or dishwasher. It helps if there is a mark identifying a certain Murano company or a signature of the master glass-maker on the item, and some Murano Glass companies do label, stamp or sign their work in some way. When you hold glass up to the light, you won’t see a difference, but fine crystal will sparkle in the light. While some Uranium glass has an oily sheen to it, that doesn’t mean that a piece lacking said sheen isn’t real. Often, crystal will feel heavier than glass due to the lead content. Uranium or Vaseline glass is a yellow-green color, and if authentic will fluoresce under a black light. The simplest test is to scratch the agate on a glass surface, a bottle or a tumbler. 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 (which was a yellow-green color) of Vaseline brand petroleum jelly as formulated and commercially sold at that time. Opaque glass, commonly known as milk glass, reached the height of its popularity in the 19th and early 20th century when it was produced as a more economical option to European glass and china. Boyd Glass enjoyed 36 years of successful glassmaking. Another way to tell the difference between the two is to touch the objects. I hope people don't think it's real and start bidding! The colour is an important part of carnival glass and affects the appearance of your collection as a whole. Instead, after the glass is cooled, the piece is hand-carved on a diamond wheel. 1930-1939 and commonly produced in pink, green, Delphite (opaque blue) and clear. @A portable ultraviolet rays lamp is so called a "BLACK LIGHT", New tumblers and coasters have the same measurements as old. You might also like to read a Fact Sheet on this topic or the response to another related question. The information posted on this web page is intended as general reference information only. Common colours are marigold, amethyst, green, and blue. Like all types of colored glass, minerals are added to the molten mixture during production to achieve the color.The type of mineral added to vaseline glass is actually what makes it glow. Back to Glass Encyclopedia Home. For the most part, real Depression glass is lighter than reproductions. FACT: Vaseline Glass is still being produced today, using the same compounds as over 100 years ago. Since it is part of the glass, the uranium cannot rub off by contact. Either red/orange fluorescence or … Flaccus filled in the gap by obtaining the U.S. Glass Co. license to make Vaseline jars at his Enterprise Glass Co. in 1893 – again probably only for a year, although the timing is less certain, and Flaccus may have continued either machine or hand production of the Vaseline jars – … Category: Consumer Products — Radioactive Ceramics and Glass. This is NOT vaseline glass. Bottom Line Recommendation: This guide is for people who own jewelry pieces or collections and want to know if they are real. It was made by the Jeannette Glass Company ca. Uranium glass (aka Vaseline glass) was manufactured using trace amounts of (you guessed it!) or blue/greenish-blue fluorescence means NOT vaseline (or uranium) glass. Uranium glass is opaque. Confusing Custard Glass. A real pearl should bounce about 13 or 14 inches high, whereas an imitation pearl’s bounce will typically be much lower. Reproduction tumblers are easily identified because they do not have the patent number. Specific facts and circumstances may affect the applicability of concepts, materials, and information described herein. Crystal will also feel more smooth and rounded than glass, which will feel more brittle. I started out as a barber and Sue worked in the produce department with the Kroger Company. American Brilliant Period glass production was the last great heyday of the cut-glass craze -- and it ended about a century ago. Then go online and check if the glass master is indeed located in Murano, Italy. glass)" , and "What is genuine vaseline glass and what is not?" Genuine early American flint glass is getting mighty thin on the ground these days. The Federal Glass Company produced pressed glass, more commonly referred to as "Depression Glass" in Columbus Ohio. There may be slight imperfections in authentic Depression glass like tiny bubbles or ripples. You have raised a question about whether your cabinet or dishwasher could be contaminated from contact with radioactive Vaseline® glass dinnerware. Either red/orange fluorescence It's called milk glass because the glass itself looks like the color of milk. Vaseline glass, though similar, is transparent. Antique and collectible glassware has had competition for years. Pontil Marks: 99.99% of the time, Fenton will not have a pontil mark on the bottom. It glows, but they aren't using the right stuff." It is said that American brilliant cut glass casts a yellow hue under ultraviolet light. Like other glassware, milk glass underwent a revival in the 1940s and 1950s and has been considered an “evergreen” collectible since. Be advised that over time, requirements could change, new data could be made available, and Internet links could change, affecting the correctness of the answers. Most Vaseline glass was produced during the Victorian era. This is a basic requirement of all vaseline/uranium glass collectors. How blessed we have been. The stickers are usually oval and may have scalloped or smooth edges. Reproduction tumblers are easily identified because they do not have the patent number. American colorless pressed glass made before 1930 is said to fluoresce yellow, while reproductions generally do not. Uranium glass is opaque.

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