It has distinctive a distinctive knob pattern and comes in a variety of colors. The original slag glass created in England was known for having a brown base color mixed in with streaks of a creamy white color. Slag glass is also sometimes used to refer to marbled glass pieces that didnt technically use slag as an additive. It is hard to keep fragile glass intact for decades. The action you just performed triggered the security solution. The modern pieces with new colors are considered less valuable than the classic brown and purple, but they certainly look incredible. Pieces from well-known manufacturers or in rare colors may fetch a higher price. Slag glass is a term used to describe a type of colored pressed opaque glass made using the "slag" left over during the iron smelting process. For example, slag glass pieces with distinct marbling patterns or interesting shapes may be more valuable to collectors. Slag glass antique lamps sell Between $200 and $2,000, and most of the value is in the light itself. Slag glass lamp repair By Len Daley. While collectible, the price range varies greatly depending on the item and manufacturer. Kitschy Avon Collectibles With Nostalgic Appeal. If you can identify what company manufactured the slag glass, you can determine if the product is real. McCrory and Kresge also were major customers. Question: Im looking to find some info on this slag glass lamp. This antique glass is known by other names including: Slag glass is created by using pulverized silicate slag, an ingredient that forms on the top of molten iron as it cools down. Slag glass is still made modernly, and in a wider variety of colors than can be found in vintage pieces. Related Posts: Plated Amberina - Rare, Colorful Art Glass Plated amberina glass, with color that graduates from amber to; Glass Paperweights You cannot fix a cracked snow dome paperweight. These are 2" in diameter at the fitters, and 1 . 1231C - 10 1/4 Ceramic Amber Tone Vase Lamp. Outstanding glass and color. This material takes on different colors depending on the minerals and elements that are present in the iron. Slag is the byproduct of steel production. Golden glass pieces should have a translucent, amber sheen to them in order to be authentic. If exposed to a black light, the glue residue would show on a newer lamp. This website is using a security service to protect itself from online attacks. From Art Deco to 1970s Contemporary, we tried to list as many lamp manufacturers as we could find. Early examples of slag glass already came in a variety of colors, but modern styles of mosaic glass are available in a seemingly endless array of hues and shades. Leave it in the comments below! Inspect the glass closely and see if you can spot tiny specks of color - known as 'confetti' glass - a sure fire sign that the lamp is genuine. Telling slag glass apart from other styles is actually quite simple. Image 2: Tiffany Studios Patinated-Bronze and Leaded Favrile Glass Poinsettia Floor Lamp. Slag glass is created when steelmaking byproducts are melted down and formed into translucent blocks or shards. Sotheby's, New York, NY (December 2017) Estimate: $300,000 - $500,000. Vintage glass pieces come in so many different colors, types, and styles with different names for each variety. In this case slag, a by-product from iron smelting, is mixed into the molten glass before pressing. Slag Glass information from the Glass Encyclopedia Peachblow was produced between 1955 and 1963. If you love the look of slag but dont want to pay extra for vintage, or are looking for a higher variety of options, check out some of the more recently produced glass pieces. As with many other types of vintage glassware, the slag glass technique can be found in all sorts of different pieces, decorative or functional. The key to determining if a piece of glass is true slag or just a handsome example of pressed glass is to look for glass that is obviously and richly marbled rather than simply colored or streaked. Known by various other names, slag glass is instantly recognizable by its opaque glass and smooth blend of colorful streaks, creating a distinct marble effect. Now, you can find slag glass pieces in practically any color. What Is Slag Glass? Slag glass gets its name from slag. Verna Mae Wright died in 1990. Rubber and vinyl coated wires were not used until the post-World War II era. Identifying Silhouette Slag Glass Lamp | All About Antiques How to Identify Slag Glass | 10 Easy Steps (2023) Pulverized silicate slag is white in color, and will show up creamy in the finished glassware. A beautiful pieceno matter the age or valuehas the ability to brighten a room and add character to interior decor. Arts and Crafts Limbert Style Slag Glass Lamp Slag Glass Identification. Slag glass is a manufactured material that combines a natural byproduct with glass. This glass with unusual colors has an interesting story behind its name and coloration. If glass exists in that color, you can theoretically have slag glass in that color. This is because the top manufacturers of the day often did leave any identifying brand marks on the fixtures. Did we forget one? Some well-known slag glass manufacturers include Sowerby, Davidson, and Greeners. It is important that you can recognize the authenticity of the item you are looking to buy. Don't miss out on this valuable resource - visit our research tools today! The result is a material that lies somewhere between porcelain and glass. $40.00 shipping. New York Art Deco Nude Dancer Spelter. This type of glass was used to make all types of glassware, including panels for lamp shades. They moved across the Ohio River to Williamstown, West Virginia, and built a . Sowerby also created several other color formulas including Giallo (yellow), Pomona (green), and Sorbini (blue). There is another theory that slagware, and some other glass decorated with multi-colored enamels, were made up from odds-and-ends of glass left over at the end of the day, Webber reiterates.3, The most common base colors include white, cream, primrose, and blue. Those who love, buy, or collect antiques will tell you that while price and value are important, they are really only half the battle. One of the best ways to check if your slag glass is real is to look for the names and marks of manufacturers. Pictures of both the inside and outside of the lamp. You'll be able to tell if this bronze is real if you notice a naturally occurring patina (greenish brown film that results from oxidation). All rights reserved. Many antique lamps of these periods were made with stained glass, rather than slag glass, and a careful review of the glass opacity and patterns is necessary to determine the difference. Handel Lamps - oldlampvalues . Ph.D. antiques appraiser Dr. Lori reveals tips to tell if the piece you think might be Tiffany glass is really slag glass used for that lamp shade or other p. Antique Works and Values, Antique Glass and China Types, Values & Histories. 2. Fenton Rose Pastel Hobnail 4 1/2-inch Vase. Price Guides! Jeannette Glassware, originally Jeannette Bottle Works, was founded in 1888. To do this, you'll need to remove the globe and burner. In addition to technically necessary cookies, this website uses the web analytics software Matomo. How To Identify Tiffany Lamp - How to Tell Real From Fake A Hanging Slag Glass Lamp, circa 20th Century Six sides of milky slag glass in a metal frame with a copper finish. American Gilt Spelter Figural Putto Lamp, Pair of Louis XVI Style Patinated Spelter, 19C. Cavo is the author of Love Immortal: Antique Photographs and Stories of Dogs and Their People. To determine if an item is true slag glass or if its a combination of two molten glasses, consult a vintage glass appraiser. Explore other items from ourAntiques & Collectibles Price Guide. Look for a Fenton tag (used before 1970), look for the Fenton mark ("Fenton" in an oval), look for "F" in an oval, indicating another company's mold was used (1983+). VINTAGE SLAG GLASS LAMP All original wiring, Slag Glass Lamp, figural spelter base with, FIGURAL SPELTER LAMP WITH MARBLED ART GLASS, TWO ANTIQUE CZECH GLASS FRUIT BASKET BOUDOIR, ART DECO NUDE FIGURAL LAMP: Cast spelter, FIGURAL SLAG GLASS TABLE LAMP: Patinated, A pair of figural spelter oil lamps, with, Victorian Figural Spelter Lamp of Lady holding. Lighting FixturesPettingell-Andrews Company, c. 1910, Gas and Electric LampsWelsbach Company, c. 1910. 3)Check for markings and names: As with most antiques, manufacturers and designers will often leave some form of signature or marking, making it much easier to date and identify vintage slag glass. Quick FAQ: -Yes, 99% of Handel lamps are marked. Handel Teroca lamps were so successful that the next line of lamps introduced were called Teroma. The key to determining if a piece of glass is "true" slag or just a handsome example of pressed glass is to look for glass that is obviously and richly marbled rather than simply colored or streaked. Slag glass was originally created in the United Kingdom in the 1890s by adding this slag substance during the glass-making process. Glass Collectible Antique Lamps, Glass Tobacco Pipe, Coca-Cola Glasses; Additional site . Real slag glassware will also never just be one solid color, it will always be blended. Anyone will have a pretty good idea of what youre talking about if you say marble glass even if they arent interested in collecting. At first they painted glass blanks from other glass makers, but started making their own glass when they became unable to buy the materials they needed. Take a walk down the brick-lined memory lane with these vintage Lego sets. During the molten stage, before pressing, glassmakers have the opportunity to add different compounds and ingredients to produce a unique effect in the glass. All rights reserved. Some of the most popular manufacturers were Miller, Bradley & Hubbard, Empire Lamp Manufacturing Company, Pittsburgh Lamp, Brass and Glass Company, H.E. 100 Professional Tiffany-Slag Curved Glass Repairs Slag glass of other colors is unlikely to be an antique. The permanent exhibition traces the changing fortunes of the border region from Franco-German war of 1870/71 to the affiliation of Saarland to the Federal Republic of Germany in 1957. Other manufacturers quickly caught on and the style rose in popularity soon following its creation. It has a unique, earthy appearance and can be found in a variety of colors. Instead, the glassmaking duo from Pennsylvania combined two colors of molten glassone white and one opaqueto create the same marbled effect. Determining slag glass worth will vary in difficulty depending on what youre looking for. Antique Slag Glass Lamp, 8 panel umbrella. Consult a professional or experienced collector if youre unsure about a pieces authenticity. This guide will explain how slag glass was made, when it was popular, and what its worth. Identifying slag glass can be a bit tricky, as there are many different types and colors of slag glass. Saarbrcken campus | Universitt des Saarlandes Then, gently wash the piece using warm water and mild soap. It has become a sought after collectible for its unique appearance and history. There continues to be a vibrant market for antiques of all varieties due to their breathtaking beauty and exquisite designs. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Vintage Slag Glass Value (Identification & Price Guides), Vintage Hummel Plates Value (Identification & Price Guide), Brown Betty teapot Value (Identification & Price Guides), How Much Is a 2-Dollar Bill Worth? What is Slag Glass? Price Guide and History - Invaluable Dr. Anthony J. Cavo is an honors graduate of the Asheford Institute of Antiques and a graduate of Reisch College of Auctioneering. The strict definition of slag glass means that it has powdered silicate slag from iron smelting mixed into the glass to create streaks. These three manufacturers are very well known in the United Kingdom. This wouldnt be considered slag glass in the strict traditional definition, but many collectors will still use the term to refer to any marbled, opaque, pressed glass pieces. The visual marbling of this slag is reminiscent of slag glass, however, the presence of actual slag in slag glass pieces depends on how it was created. In this case, the slag used for marbling glass is produced when iron is heated during the production process. H. Scantily clad figure stretching to support the shade. Love Immortal: Antique Photographs and Stories of Dogs and Their People. They're easy to find, and make a colorful, decorative display in your home, offi, What Is Vaseline Glass? 1230A - 10 1/4 Alpha Art Glass Green Vase Lamp. Glassmakers have achieved a similar-looking marbled effect to slag by simply mixing two different colors of glass together. 73- Important Duffner and Kimberly leaded lamp. While Handel first produced mosaic glass shades for its lamps, they soon branched into other design areas. Vintage Swag Green Slag with Amber Glass Drop Light, Pendant Hanging Lamp . Browse Similar. Remember, the most common way to make slag glass was by skimming silicate material from the top of molten iron. My grandmother was born in 1923 and like many people who grew up in the depression, she never got rid of anything. Antique Glass Insulators and Their Electrifying History, Antique glass insulators are a low cost but very popular collectible that come in a myriad of fun shapes and colors. Reach out to an expert 7. Polly Pocket toys may be small in size, but they're big on value. Unique antique lamps, especially those made during the Victorian era, had glass that was hand blown. EARLY 20TH CENTURY SLAG GLASS LAMP | Pricing Guides Dictionary & Values Add To Cart Description. You may also wish to polish the piece with a small amount of mineral oil for added shine and protection. Polly Pocket: History & Value of Barbies Biggest 90s Rival. Cabinet-Sized Slag Glass Specimen E1700 | eBay Vintage lamps will show typical signs of aging, such as patina on the metal . Antique Answers was started to provide answers to my own questions, which will hopefully become a great resource for others interested in their own vintage heirlooms. Have you ever wondered what someone meant by slag glass? How to tell if stained glass is real? (Quick Tests!) - Crafting Pal They still wanted the white streaks, and so they mixed purple glass with a white, opal-y, colored glass. Shop at WAYFAIR Maybe inherited a Tiffany stained glass lamp or Handel lamp that needs a little love. Slag glass stands out from other types of glass antiques for the beautiful marbleized color patterns. Your caramel slag glass paneled lamp dates from the 1910s through the 1920s. Cranberry Glass Foyer Lamp - Kovels An Identification Guide for Beginners, Atlas Mason Jar Identification and Value Guide, Vases, Compote, Creamer, and Bowls, Lot of 7. Because of its rustic look, slag glass is often used in stained glass windows, lamps, and other decorative items. Thanks for reading! Original Tiffany Lamps employed this metallic finish on the resin base. Tiffany Lamps: Price Guide and How to Identify an Original - Invaluable This is something people will often wonder about. Unlock the true value of your collection with our comprehensive research guides from identifying makers' marks to appraising all kinds of antiques and collectibles, including items featured in this article. Markings for Bigelow and Kinnard, Kramer, Steuben, Bradley and Hubbard, Stickley, Gorham . It should not have white streaks mixed into the color, nor should it be one solid color. Slag glass can be easily confused with other types of opaque glass, such as frosted or flashed glass. Slag Glass prices range from 50 dollars to 1500 dollars. Hopefully, these tips will help make your search for slag glass a successful and enjoyable experience. 1236 - 8 1/2 Florentine Green Moonstone Vase Lamp. List of Vintage Lamp Manufacturers - RetroWaste The most popular colors of slag glass tend to be shades of green and blue, but they can also be found in red, yellow, lavender, brown, and even black. Generally only old lamps feature a brass collar. This slag is predominantly binary compoundsof elements such as silicon, sulphur, and aluminium reacting with the sides of foundry molds. Slag glass is a man-made opaque base glass with marbelized swirls in a different color. It wasnt longer before Davidson, Sowerby and other glass makers began experimenting with different colors, combining streaks of creamy opal with purple, yellow, blue, and green. Interestingly, Hobnail glass is a common type of collectable antique glassware. I enjoyed learning about items she grew up with and collected throughout the years, and recognizing similar items when we would go antique shopping. If the metal is shiny, the glass is pristine, and the lamp generally looks newer overall, it might be a reproduction. Of course, no discussion of antique lamps is complete without the Tiffany Pond Lily Lamp, circa 1903, which sold at . The marbled effect is gorgeous on its own, but shining light through a complicated and colorful design is even more stunning. Slag glass producers mark their products with the companys initials or the companys logo. 1930s Traditional Slag Glass Lamp; Share. Additionally, the uniqueness and character of each individual piece can also affect its value. Glass Type. Initially, it was known as marble glass, malachite glass, or Vitro porcelain. 7 Avon Collectible Bottles Worth Thrifting. eBay (258) Magazine. Ruby Red LLC is compensated for referring traffic and business to these companies. A large part of the 2,700 m exhibition area is located under Schlossplatz. If you're hoping to add some historic charm to your home, antique chandeliers can be a wonderful choice. Hold the glass up to a light source, and you should be able to see the light passing through, albeit with a mottled or cloudy appearance. Take extra care to avoid leaving any streaks or marks on the surface of the slag glass. Slag glass has been used since the late 19th century and became popular during the Art Nouveau period in the early 20th century. The term slag refers to the molten run-off that is produced during iron smelting as the metal cools off. Slag glass is named after silicate slag, a colorful material that is a byproduct of molten steel. Whether youre looking for a decorative piece to spruce up the place, or searching for that next big purchase as a collector, the world of slag glass has something for everyone. Exceptional lamp. IDENTIFY SHADE DESIGNS 4. If the glass is opalescent (has more than one color), it is probably made after 1880. The church is not only the city's most renowned landmark but also stands alongside Dresden's Church of Our Lady and St Michael's . Very similar to the photo on page 182 of Paul Crist's book. Manufacturers usually make slag glass by mixing this . It is the skill with which original copper foil shades were assembled that largely separates vintage shades from modern reproductions and most fakes. Happy collecting! Typically slag glass antiques will be vases, dishes, bowls and decorative figurines and picture frames. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Slag glass lamps are one of the most sought-after items made of slag glass. Imperial Glass - Guide to Value, Marks, History - WorthPoint It could have internal or external threads. It can also be called Malachite glass, in reference to the stone. These patterns are created during the manufacturing process and give slag glass its unique appearance. The history of slag glass goes back to the late 1890s in Gateshead in the northeast of England. Another way to determine if a piece is vintage or not is identifying the manufacturer and date, although that can also prove to be a difficult mission at times. The key identifying feature of this type of glass is its similarities to the patterning found in natural marble. 3. The term slag glass is often used interchangeably with the terms flashed glass and stained glass. However, slag glass is a type of stained glass made from recycled materials. [more like this] A pair of figural spelter oil lamps, with The price of slag glass ranges considerably from five dollars for small slag glass pieces, to antiques that would garner hundredsif not thousands of dollars. Many of the same designs for milk glass were also produced in slag glass. Sowerby in Gateshead, England is believed to be the first glass foundry to create slag glass. Avoid using any harsh chemicals or abrasive scrubbing tools, as these can damage the glass. Brush strokes, however, are an indication that the lamp was hand-painted. Some of these names can be used synonymously, but some of them have slightly different meanings that a serious collector should be aware of. If youre still unsure if a piece is slag glass, consult with a professional or experienced collector for their opinion. Slag glass is a type of pressed glass that is known for its brilliant and vibrant colors. Add to Favorites Tiffany Style Bent Glass Tulip Green and Beige Slag Glass Hanging Lamp Ceiling Fixture Restaurant Light 18.5" w x 11" h 5 out of 5 stars (218 . Everything You Need to Know About Slag Glass - Antique Answers As technology and manufacturing changed over time, new colors have been introduced to the slag design. A few examples of modern glass manufacturers operating out of the US today are Boyd Glass, Mosser, and Summit. Theres a fairly large price range for slag glass, with intricate vintage lampshades fetching the highest price. Consulting with a professional or experienced collector can help determine the approximate value of a particular piece of slag glass. Where the slag is really concentrated it will appear milky white. Examine the color. Slag glass was made by British companies Sowerby, Davidson and Greener during the Victorian era, around the 1880's . Purple is the most common slag glass color. AMERICAN EARLY 20TH CENTURY SLAG GLASS LAMP, Nice, original 8 panel caramel slag glass, 384. Copper tone spelter. It should not have white streaks mixed into the color, nor should it be one solid color. Start architect Friedrich Joachim Stengel has shaped Saarbrcken's cityscape like no other. The mosaic glass created in Pittsburgh was a mixture of purple and either white or an opal shade. Oftentimes the pieces labeled as variegated glass have more stripey streaks in contrast to the more organic swirls of a true marble pattern. Our up-to-date information will give you an accurate understanding of your items' worth. Once you find those marks, research the company to see if they are an authentic brand. Some later manufacturers include Boyd, Imperial, and Westmoreland. Metal issues or glass issues I may not see in the pictures. 1231A - 10 1/4 Alpha Art Glass Amber Vase Lamp. Topped by an Art Deco style marbled yellow art glass shade. Lot 167 : Roycroft/Dard Hunter Extremely Rare Table Lamp, Rago Arts and Auction Center , Lambertville, NJ Est: $40,000-$50,000 The number of broken pieces. On the other hand, Tiffany Studios decorative items sold for several thousand dollars. This is listed on the bottom of most slag glass items, especially lamps. (Source). The SUCCESS burner was Pilabrasgo's "claim to . When identifying authentic slag glass, pay close attention to the marbling. Work with a qualified appraiser to help you identify the manufacturer and type of slag glass antiques you have, including antique glass insulators, to determine the true market value. The first test in evaluating shades is to closely inspect the quality of the leading, the soldered seams holding the pieces of glass together. To dry, use a soft cloth and carefully pat the glass dry. This created the marbled effect and bright variations in color that make slag glass so unique. The marbling is sometimes compared to tortoiseshell. Find Fenton markings 3. This will ensure that the money you are spending is worth it. How to Identify Slag Glass Types and Worth | Heirlooms at Home Vintage Slag Glass Lamp Antique Boudoir Lamp Slag Glass Lamp Arts & Crafts Lamp Art Nouveau Vintage Lamp Ornate Lamp 5 out of 5 stars (115) $ 375.00. [more like this] FIGURAL SLAG GLASS TABLE LAMP: Patinated spelter figure of a standing woman on art nouveau style base, double socket fixture, no visible makers mark, 23 3/4'' h. x 7 1/2''.