identifying slag glass lamps

Happy cleaning! They bring a sense of the past into a home and they add a pop of color. Share via E-Mail; Share via Pinterest; Copy Link; 1930s Traditional Slag Glass Lamp. The worth and value of slag glass varies. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Happy collecting! You can find antique slag lighting fixtures for sale on websites such as Etsy for as low as $20 or as much as $16,000. Remember, being cautious and taking your time while identifying slag glass can help ensure you make a wise purchasing decision. Be sure to leave us a comment. Designers would create intricate stained glass style patterns and scenes within lampshades. I would say the lamp is from the 30's or 40's. glass glasses lamps marks plates. The lamp stands 20.5" tall and weighs only 4 lbs in total. Because of this, there is always a distinctive bump, indentation or spot where the glass was cut from the stem after it was shaped for the lamp. Thank you. Whether you just found the slag glass table lamp of the century in the back barn or at an estate sale. Lot 167 : Roycroft/Dard Hunter Extremely Rare Table Lamp, Rago Arts and Auction Center , Lambertville, NJ Est: $40,000-$50,000 Unique antique lamps, especially those made during the Victorian era, had glass that was hand blown. Original 1910-1920's slag glass lamp, shows one cracked glass REVERE Copper and slag glass lamp, its faceted shade with green LAMP SHADE - Leaded slag glass lamp shade, unsigned, with TABLE LAMP - A four panel, dark green slag glass lamp with VINTAGE SLAG GLASS LAMP All original wiring, Circa 1920s, Size: 22 Slag Glass Lamp, figural spelter base with couple. Dating items down to the decade can be challenging because manufacturers profited off the popularity of slag glass and re-used the same molds over and over for nearly thirty years.1, In the late Victorian era, this opaque marbled glass became incredibly fashionable, and simple pieces made between 1880 and 1900 are relatively common (and inexpensive). Handel lamps with metal overlays over slag glass are from the company's "Teroca Ware" line. Slag Glass Panel Lamp By the Empire Lamp Company with Two Color Shade. No other type of glassmakingincluding carnival, imperial, milk, depression, or uraniumhas this distinct creamy swirl effect. 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. It should not have white streaks mixed into the color, nor should it be one solid color. Set of four antique embossed brass hanging lamp socket covers, 3 3/4" in diameter overall. 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. There are many high quality reproductions on the market . Diyquickly.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon.com, endless.com, smallparts.com, myhabit.com, and any other website that may be affiliated with Amazon Service LLC Associates Program. Lamps, lampshades, and chandeliers were very popular uses for slag glass. To help us improve user experience, we use Matomo to analyse how visitors interact with the website. Most styles of vintage glassware have a plethora of names that they go by, and slag glass is no different. Always remember to inspect glassware in a room with good lighting. Delivery from Downers Grove, IL 7-14 days Edit my Location. The term mosaic glass is much more inclusive and includes these pieces that look like slag glass but dont actually contain any slag. (Source). Price Guides! The number of broken pieces. 9. Brown malachite slag glass pieces are the rarest and most coveted colors of slag glass. This website is using a security service to protect itself from online attacks. Slag glass is also sometimes used to refer to marbled glass pieces that didnt technically use slag as an additive. Sotheby's, New York, NY (December 2017) Estimate: $300,000 - $500,000. Avoid using any harsh chemicals or abrasive scrubbing tools, as these can damage the glass. Where the slag is really concentrated it will appear milky white. To differentiate, compare the texture, pattern, and color of the glass to those of known slag glass pieces. But in case you are looking for a list of vintage lamp manufactures from the mid-1800s to the present day, we've provided that below. 73- Important Duffner and Kimberly leaded lamp. Very similar to the photo on page 182 of Paul Crist's book. One of the easiest ways to identify slag glass is by its marbled or swirled pattern. If green-colored glass called the 'slag' is used to make the stained glass, it's probably made in the early 1900s. 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. Prof. Busch working group is focused on solid metallic glass and biomaterials. Fenton rose crest cornucopia candle holder 2. As always, make sure to do your due diligence when buying or selling any antique, and remember there are many free online appraisal sitesyou can consult as well. Slag glass can be easily confused with other types of opaque glass, such as frosted or flashed glass. 3. Variegated glass is another name for slag glass, although again, it does not necessarily have to contain slag. early 20th century. Egyptian patterns were also common due to the interest in the tomb of King Tut in the early 1920s. According to Norman Webber, some companies referred to slagware as end of the day wear because glassmakers collected slag from the surface of iron right before they poured it at the end of the day. The edges may be uneven or jagged, and the overall shape may be asymmetrical. Vintage slag glass is most commonly found in brown or purple colors with white streaks, but you can also find plenty of green and blue as well. You can tell the age/authenticity of stained glass by looking at the glass that's used. Mychelle is a writer and web designer who is passionate about a wide variety of topics and enjoys sharing her knowledge with readers. It is hard to keep fragile glass intact for decades. A few examples of modern glass manufacturers operating out of the US today are Boyd Glass, Mosser, and Summit. Both beautiful and elegant in their own regard, stained and slag glass are actually completely different. 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. Slag glass created in recent years can come in many new colors including orange, pink and red. This list is limited to only a few results.Many more items are available to our members through our You can determine the age of a piece of slag by finding the date of production. Determining slag glass worth will vary in difficulty depending on what youre looking for. The value of slag glass items can also be determined by the condition of the item. Slag glass is a beautiful and unique material that can be used to create stunning works of art. Many lamps are marked as much as three times (on the base, shade, and metal fitter rim). When identifying authentic slag glass, pay close attention to the marbling. #2. As technology and manufacturing changed over time, new colors have been introduced to the slag design. Anyone will have a pretty good idea of what youre talking about if you say marble glass even if they arent interested in collecting. Ruby Red LLC is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 1930s Traditional Slag Glass Lamp; Share. Challinor would instead combine two colors of molten glass. Add your item here. Mineral Identification Labels (#185769230073) o***l (1621) - Feedback left by . The marbled pattern and swirled appearance of the glass add to its unique appeal and character. Popular slag glass lampshades shapes included mushroom, dome and flower petals. Tiffany, Roycroft or Steuben lampshades made with slag glass can command prices of up to $20,000. SHADE A vintage figural spelter table lamp, the depiction of a young man holding a cluster of grapes. Over time, other companies like Imperial Glass, Akro Agate, and Westmoreland began producing and selling their own versions of slag glass. Slag glass is often used as a catch-all term for any type of pressed glass that is opaque and colorful, but not all glass that fits this description is true slag glass. Click to reveal Check for flaws in the glassware 6. . I will include suggestions and comments along with links regarding shipping and packaging. 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. The base of slag glass is an opaque color, and the streaks are typically a milky white or cream color. . Happy searching for your favorite color of slag glass! Slag Glass Lamp, Arts & Crafts era, geometric, EMPIRE LAMP CO. SLAG GLASS LAMP bronze base. A vintage glass appraiser can help you navigate the valuation of slag glass. Fenton produced quality glass, so you should not find any defects like bumps or air bubbles . The slag glass on this lamp is primarily white, which affects the color of the cool light cast by the light bulb. (Source). In this case slag, a by-product from iron smelting, is mixed into the molten glass before pressing. The original factory was in an old glass factory in Martins Ferry, Ohio in 1905. Oftentimes the pieces labeled as variegated glass have more stripey streaks in contrast to the more organic swirls of a true marble pattern. The SUCCESS burner was Pilabrasgo's "claim to . Leave it in the comments below! As long as you consider the key characteristics marbled pattern, rough texture, translucent quality you should be able to identify it accurately. This antique glass is known by other names including: Brown malachite Brown marble vitro porcelain Mosaic glass Marble glass Variegated glass Image Credit What Is Slag Glass Made Of? 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). The result is a material that lies somewhere between porcelain and glass. Despite its rarity, you can still find slag glass items in modern homes. Save my name, email, and website in this browser for the next time I comment. If they look and feel smooth and consistent, it was likely machine painted. Don't turn your nose up at these vintage perfume and cologne bottles from Avon. Slag glass was extremely popular when used to create lampshades. These are 2" in diameter at the fitters, and 1 . There are several things to keep in mind when looking to identify whether something is slag glass or not. Topped by an Art Deco style marbled yellow art glass shade. Consulting with a professional or experienced collector can help determine the approximate value of a particular piece of slag glass. 2002-2023 LoveToKnow Media. Accept Read More, We hand-pick antiques for our readers and may, Popular Glass of the 19th and 20th Centuries: A Collectors Guide (Millers Collectors Guides), Most Popular Vintage Corning Ware Patterns (and Price Ranges), Antique Price Guide with Pictures: A Look at Antiques Worth Money, The Best Antique Price Guide Books for Appraising, Blue Willow China: All About This Timeless Classic, Flexible Flyer Sleds: A Closer Look at History, Value, and Quality, What Is Carnival Glass? Overview. Typically vintage pieces will be worth the most, but some collectors may still value the piece. Verna Mae Wright, L. G. Wright' wife, directed the company following Wright's death in 1969. A similar look was created around the same time by U.S. manufacturers Northwood and Dugan. 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Traditional slag glass gets its creamy colored streaks from something called slag. Restoring bent slag glass antique lamps with museum quality SINCE 1978. White melts into a pale lavender when it intersects with the opaque purple. Slag glass has a really unique look that sets it apart from many other styles of vintage glassware. Contact Us. Look for labels indicating the glass is made from recycled materials, such as Cinderella or marble glass.. This guide will explain how slag glass was made, when it was popular, and what its worth. $1,551 57% Off $3,600. 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. It can also be called Malachite glass, in reference to the stone. Identifying Slag Glass. Because of its rustic look, slag glass is often used in stained glass windows, lamps, and other decorative items. This would still give the marble effect without the use of actual slag. 2)Inspect the color: Vintage slag glass can really only be found in brown, purple, green, and blue. Ruby Red LLC is compensated for referring traffic and business to these companies. A piece of slag glass will be worth more if it is a rare color or a rare item. Slag glass is created when steelmaking byproducts are melted down and formed into translucent blocks or shards. Slag glass has a rich history that makes it extremely valuable to collectors. The value of slag glass antiques ranges from $20 $20,000. The value of slag glass can vary greatly depending on factors such as age, condition, and rarity. Instead, the glassmaking duo from Pennsylvania combined two colors of molten glassone white and one opaqueto create the same marbled effect. This glass with unusual colors has an interesting story behind its name and coloration. One clear indicator, though, of true slag glass is the richness of its tonal variations: real slag glass will not simply bear streaks of color but instead will offer more subtle variations in opacity and tone like one would expect from marble or alabaster. This is something people will often wonder about. Identification Tips & History Highlights, One of the most unusual types of antique glass that collectors can investigate, Vaseline glass is absolutely fascinating due to its color, history, and radioactive components. Some later manufacturers include Boyd, Imperial, and Westmoreland. Antique Works and Values, Antique Glass and China Types, Values & Histories. True slag glass was originally produced in England during the last quarter of the 19th century when, simply put, it is believed slag from iron-smelting was added to molten glass to achieve a marbling effect in a variety of colors. It is a rather nice example of lamps of this type and I would place a value of $300 to $400. Markings for Bigelow and Kinnard, Kramer, Steuben, Bradley and Hubbard, Stickley, Gorham . Antique lampshades are perhaps one of the most common fixtures for vintage and valuable slag glass. This color pattern led to the "brown malachite" and "brown marble" names. rim, lamp is 20'' long x 11'' long. column support set beneath an opaque glass fount with painted silhouette bird and foliate detail and with a spherical etched glass shade and clear glass chimney together with search our price guide for your own treasures. See the patent table below for details. However, there are a few key . There are three ways to differentiate vintage slag or mosaic glass from modern iterations: 1)Examine the marbling pattern: While both new and older pieces will have a marble look, its certainly not enough to spot an antique. But before you buy or start working with slag glass, it is important to know how to identify it correctly. Some slag glass may also have opaque white sections, often in the form of streaks or patches. ALL RIGHT RESERVED. 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. By following these tips, you should be on your way to spotting slag glass like a pro. Vintage Lamps and Lighting. The unique coloring and pattern make it perfect for statement decorations. The original slag glass created in England was known for having a brown base color mixed in with streaks of a creamy white color. Lamp measures 5 1/2'' h. x 11'' x 5'', globe measures. Copper tone spelter. Manufacturers used the glass in molds to make bowls, compotes, vases, plant cache pots, and more. Ludwigskirche. Have you ever seen a piece of glass and wondered where it came from? Electrified with hanging chain, Arts and Crafts style hammered brass andArts and Crafts style hammered brass and slag glass lamp unmarked early 20th century; with green slag glass panels and reticulated shade square base 26 I grew up going to antique stores and markets with my mom and grandmother. His masterpiece is the Lutheran Ludwig's Church, which stands at the centre of a rectangular plaza. An antique piece from the UK would typically have one of these markings: While American vintages would bear the marks of: Be sure to check out this comprehensive guide on antique glass markingsto know what to notice when appraising an antique piece of glass. Starting in the late 1800s and through the mid-1900s, both England and U.S. manufacturers were creating slag glass both with and with the use of iron slag. The addition of iron slag into the process gives slag glass its unique features, while stained glass is made from a simpler process of colouring the glass with vitreous paints. 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. 1230A - 10 1/4 Alpha Art Glass Green Vase Lamp. Sowerby in Gateshead, England is believed to be the first glass foundry to create slag glass. Slag glass is no longer produced as it once was. It has become a sought after collectible for its unique appearance and history. In addition to technically necessary cookies, this website uses the web analytics software Matomo. Unsigned decorative glass items like compotes and vases tend to sell between $5 $50, even if they are from the 19th century. 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. Verna Mae Wright died in 1990. Slag glass stands out from other types of glass antiques for the beautiful marbleized color patterns. The company, based in Jeannette, Pennsylvania, rebranded in 1898 and took on the name Jeannette Glassware. Antique Purple and White Slag Glass Cake Stand, Antique EF Industries Green Slag Glass Table Lamp. France, Late 19th Century. If the piece is pink, orange, or red it is not vintage. Once you find those marks, research the company to see if they are an authentic brand. LAMP SHADE - Leaded slag glass lamp shade, TABLE LAMP - A four panel, dark green slag. Ruby Red LLC is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 2023 LoveToKnow Media. Glass manufacturers were thought to have added slag from iron smelting to molten glass. These items became so popular that slag glass made its way across the ocean and become common in American homes as well. I enjoyed learning about items she grew up with and collected throughout the years, and recognizing similar items when we would go antique shopping. Though it's easily mistaken for other glass products produced around the same time period, such as stained glass, slag glass has its own unique look and slag glass items can fetch a wide range of prices. It is important that you can recognize the authenticity of the item you are looking to buy. Note the glass type 5. Price Realized: $550,000. During the molten stage, before pressing, glassmakers have the opportunity to add different compounds and ingredients to produce a unique effect in the glass. Slag is used to refer to the by-product that shows up when various ores and metals are smelted. I'm Stacy Jones and I love antiques! This is the most difficult distinction to make if youre not a professional. All rights reserved. Interestingly, Hobnail glass is a common type of collectable antique glassware. Brush strokes, however, are an indication that the lamp was hand-painted. While collectible, the price range varies greatly depending on the item and manufacturer. If the item is in good condition, with no cracks, discoloration, or signs of neglect, it will be worth more. Malachite stones have wavy striping in a green-tinged milky white on top of a darker green. 1. They may have additional insight or knowledge on identifying slag glass. How to identify Fenton glassware 1. Outstanding glass and color. Your lamp appears to have six panels and looks to be in very good condition. 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. Slag glass antique lamps sell between $200 and $2,000, and most of the value is in the light itself. Antique slag items are usually brown, blue, green or purple. From Art Deco to 1970s Contemporary, we tried to list as many lamp manufacturers as we could find. Rainaud, and Tiffany Studios. I use this term only because it has become a widely known, accepted, descriptive term for pressed opaque glass with swirls or streaks, even though the likelihood of it containing any slag is remote. Its worth keeping an eye out for unique slag glass pieces in unexpected places! The molten glass is placed into forms and then pressed to get the right shape and emboss the surface with a pattern. True slag glass is richly marbleized, deeply colored glass rather than glass that is colored with pale swirls or streaks, which is also known as malachite, marbled and variegated glass. If the metal is shiny, the glass is pristine, and the lamp generally looks newer overall, it might be a reproduction. Slag Glass prices range from 50 dollars to 1500 dollars. Modern day slag glass manufacturers in the U.S. include Fenton, Mosser, Summit and Boyd Glass. In this guide, we'll explore the history and characteristics of collectible slag glass lamps. Discerning Victorian consumers resisted purchasing marbleized glass in some cases and preferred more decorative elements in crystal. Two vintage brown Sowerby figurines can sell for two completely different processes depending on how the marbling came out. The value of slag glass is determined by the rarity of the item and the color. 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? Learning how to identify and value this glass can help if you are looking to collect or just learn more about this interesting glassware. A Hanging Slag Glass Lamp, circa 20th Century Six sides of milky slag glass in a metal frame with a copper finish. antique chandelier lamp parts, ornate embossed brass bobeches for lights. The Historical Museum Saar is the museum on Saarland's history. The light shining through the marbled color creates a really unique effect. They still wanted the white streaks, and so they mixed purple glass with a white, opal-y, colored glass. You may also wish to polish the piece with a small amount of mineral oil for added shine and protection. Bradley & Hubbard attributed table lamp A large octagonal paneled table lamp with green slag glass shade, #T9365 on base, #18 872 Meriden,. Shop at WAYFAIR For example, slag glass pieces with distinct marbling patterns or interesting shapes may be more valuable to collectors. Lighting FixturesPettingell-Andrews Company, c. 1910, Gas and Electric LampsWelsbach Company, c. 1910. Vintage slag glass is a lot more restrictive in color options than recently produced pieces are. These colors are created through different repurposing techniques. Ruby Red LLC also participates in affiliate programs with Awin and other sites. To test the texture, run your fingers over the surface of the glass. Antique Slag Glass Lamp, 8 panel umbrella. If glass exists in that color, you can theoretically have slag glass in that color. Slag glass is named after silicate slag, a colorful material that is a byproduct of molten steel. In this case, the slag used for marbling glass is produced when iron is heated during the production process. These beautiful pieces of functional art were popular in the late 19th and early 20th centuries, and today they remain highly sought after by collectors. In some of the most stunning lighting pieces, small pieces of the slag glass were laid out in a metal framework. This marbling is one of the best ways to identify slag glass. Most antique slag items are brown, blue, green, or purple. The marbling is sometimes compared to tortoiseshell. Finally, a Bradley & Hubbard slag glass lamp sold for $584, typical for that style and age of light.
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