identifying slag glass lamps

Image 1: Tiffany Studios Hanging Head "Dragonfly" Floor Lamp. All slag glass will be a marbled mix of some opaque color with opaque white. Share via E-Mail; Share via Pinterest; Copy Link; 1930s Traditional Slag Glass Lamp. Some famous makers include Tiffany Studios, Bradley Hubbard, and Handelwhose originals in good condition are very sought after. ART DECO FIGURAL LAMP WITH ART GLASS SHADE: An oil burning lamp raised on a brass fluted. If youre still unsure if a piece is slag glass, consult with a professional or experienced collector for their opinion. Typically vintage pieces will be worth the most, but some collectors may still value the piece. Outstanding full floral Duffner and Kimberly dogwood lamp. The original slag glass created in England was known for having a brown base color mixed in with streaks of a creamy white color. Peachblow glass - This glassware was made by many companies and is very collectible. Examine the lamp base and verify that it has a real bronze finish. 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. Designers would create intricate stained glass style patterns and scenes within lampshades. (See below for more info on marks.) However, stained glass will not have any of the milky-colored streaks that slag glass does. Est. Finally, a Bradley & Hubbard slag glass lamp sold for $584, typical for that style and age of light. Color, age, and manufacturer are definitely important in determining the value of a vintage piece. Determining slag glass worth will vary in difficulty depending on what youre looking for. They moved across the Ohio River to Williamstown, West Virginia, and built a . AMERICAN EARLY 20TH CENTURY SLAG GLASS LAMP, Nice, original 8 panel caramel slag glass, 384. Fenton rose crest cornucopia candle holder 2. Slag Glass Identification. Save my name, email, and website in this browser for the next time I comment. In some of the most stunning lighting pieces, small pieces of the slag glass were laid out in a metal framework. In addition to technically necessary cookies, this website uses the web analytics software Matomo. The action you just performed triggered the security solution. $24,900.00. If the glass is opalescent (has more than one color), it is probably made after 1880. The smooth, uneven swirls enveloping the glassware give slag glass an unmistakably look, with no two ever being quite the same. If possible, consult a knowledgeable collector or visit an antique store to verify authenticity. Look for age-related wear or markings on accompanying hardware, such as lamps or furniture. Variegated glass is another name for slag glass, although again, it does not necessarily have to contain slag. Where the slag is really concentrated it will appear milky white. Happy searching for your favorite color of slag glass! One of the easiest ways to identify slag glass is by its marbled or swirled pattern. Cloudflare Ray ID: 7c0b058ee94819fc . Slag glass was made by British companies Sowerby, Davidson and Greener during the Victorian era, around the 1880's . She added custard glass to the company's color line in 1969 and iridescent (carnival) in 1972. early 20th, FIGURAL SLAG GLASS LAMP. Malachite stones have wavy striping in a green-tinged milky white on top of a darker green. Find many great new & used options and get the best deals for Cabinet-Sized Slag Glass Specimen E1700 at the best online prices at eBay! Hobnail glass was popular in Victorian times, then, it was called "dewdrop glass." When Fenton introduced it in 1939, it became a hit. One of the most common alternate names for slag glass is marble glass, for obvious reasons. Slag glass has been used since the late 19th century and became popular during the Art Nouveau period in the early 20th century. Overview. This roughness is caused by the recycled materials that make up slag glass, making it different from smooth stained or flashed glass. 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. Kitschy Avon Collectibles With Nostalgic Appeal. It has distinctive a distinctive knob pattern and comes in a variety of colors. 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. Slag glass antique lamps sell Between $200 and $2,000, and most of the value is in the light itself. In this case, the slag used for marbling glass is produced when iron is heated during the production process. Antique Waltham Pocket Watch Value (Identification & Price Guides), Antique Typewriter Value (Identification & Price Guides), Antique Brass (Identification & Price Guides), Antique Hutch Value (Identification & Price Guides), Antique Paperweights Value (Identification & Price Guides), 15 Rarest Vintage Bratz Dolls Worth Money, Benrus Watch Value (Identification & Price Guides), Antique Blue Willow China Value (Identification & Price Guides), Antique Car Blue Book (Car Value & Identificatiron), Old Buttons Value (Identification & Price Guides), Skeleton Key Value (Identification & Price Guides). This is because the top manufacturers of the day often did leave any identifying brand marks on the fixtures. eBay (258) Magazine. 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. There are many high quality reproductions on the market . This created the marbled effect and bright variations in color that make slag glass so unique. What Is Slag Glass? But you Handling Antique Glass Antique glass should be handled as if it has been; Glass Repair Repairs to cut glass can be seen with a black; Vintage & New Glass Paperweights Glass paperweights . Maybe inherited a Tiffany stained glass lamp or Handel lamp that needs a little love. Sold with variegated glass having a floral form slag glass shade, above the spelter metal figural standard having a ve having a floral form slag glass shade, above the spelter metal figural standard FIGURAL TABLE LAMP DEPICTING A METAL SMITH IN HIS SHOP FORGING A SCIMITAR BLADE UNDER A HAOrientalist Austrian cold painted spelter figural table lamp depicting a metal Table Lam Table Lamp, early 20th c., the cranberry font on four figural columnar supports to a plinth on a highly figured black marble base on paw feet, on a highly figured Lamp NEW YORK, CIRCA 1920 An American Art Deco patinated spelter figural lamp. These lamps rarely sell for less than 100 dollars. 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. 73- Important Duffner and Kimberly leaded lamp. The lustrous glass often had threads of glass in contrasting colors pulled through the surface to form a feather shape. In this guide, we'll explore the history and characteristics of collectible slag glass lamps. Glassmakers have achieved a similar-looking marbled effect to slag by simply mixing two different colors of glass together. Your caramel slag glass paneled lamp dates from the 1910s through the 1920s. 2002-2023 LoveToKnow Media. The following research topics are of particular interest: Physical metallurgy; Thermodynamics and kinetics of metastable phase; Solid metallic glasses; . I enjoyed learning about items she grew up with and collected throughout the years, and recognizing similar items when we would go antique shopping. Some manufacturers of slag glass will label their products as Cinderella or marble glass. These labels indicate that the glass is made from recycled materials, making it easier to identify as slag glass. It has a unique, earthy appearance and can be found in a variety of colors. Set of four antique embossed brass hanging lamp socket covers, 3 3/4" in diameter overall. 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. Assuming you have a table lamp with a large painted glass shade, then your shade should measure as 14, 15, 15.5, 16, or 18 inches. Slag glass, also known as marble glass or Cinderella glass, is an opaque, swirl-patterned glass. This type of art glass is highly sought after by collectors, so its definitely worth taking the time to learn how to identify it. The value of slag glass antiques ranges from $20 $20,000. Get the best deals on Amber Glass Lamp In Collectible Ceiling Light Fixtures when you shop the largest online selection at eBay.com. Delivery from Downers Grove, IL 7-14 days Edit my Location. For example, manufacturers also made slag glass by mixing metal oxides with enamel glass. Theres a fairly large price range for slag glass, with intricate vintage lampshades fetching the highest price. Slag glass is a man-made opaque base glass with marbelized swirls in a different color. 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. On the other hand, slag glass can easily leave people confused. See also Antique Gone with the Wind Lamp for Sale: A Guide for Buyers and Collectors. Happy hunting! This incredible glass. The key identifying feature of this type of glass is its similarities to the patterning found in natural marble. 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. Remember, being cautious and taking your time while identifying slag glass can help ensure you make a wise purchasing decision. See the patent table below for details. Slag is used to refer to the by-product that shows up when various ores and metals are smelted. Slag glass gets its name from slag. Two vintage brown Sowerby figurines can sell for two completely different processes depending on how the marbling came out. Copper tone spelter. I will include suggestions and comments along with links regarding shipping and packaging. Exceptional lamp. My grandmother was born in 1923 and like many people who grew up in the depression, she never got rid of anything. Traditional slag glass gets its creamy colored streaks from something called slag. Save my name, email, and website in this browser for the next time I comment. If the base color is brown, purple, blue, or green theres a decent chance that it is a vintage make. Slag glass can be easily confused with other types of opaque glass, such as frosted or flashed glass. Both styles create the same swirl effect, and originals of both are considered vintage and valuable. 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. As technology and manufacturing changed over time, new colors have been introduced to the slag design. Slag glass has a rich history that makes it extremely valuable to collectors. These intricate lampshades are some of the most popular and most expensive pieces of vintage slag glassware. I'm Stacy Jones and I love antiques! Co. 240, rewired, new AMERICAN EARLY 20TH CENTURY SLAG GLASS LAMP With a 16 inch slag Nice, original 8 panel caramel slag glass lamp, circa 1920-30, in 384. 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. This does use the broader definition of slag glass that includes white marbling produced through any method. The molten glass is placed into forms and then pressed to get the right shape and emboss the surface with a pattern. Slag is the byproduct of steel production. Telling slag glass apart from other styles is actually quite simple. According to the Glass Encyclopedia, Slag glass is made by mixing pulverized silicate slaginto glass-pressing. The Pittsburgh Lamp, Brass & Glass Company was assigned at least five lighting-related patents between August 28, 1900 and March 21, 1916. As molten iron cools, a silicate slag forms on top of it. 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. Instead, the glassmaking duo from Pennsylvania combined two colors of molten glassone white and one opaqueto create the same marbled effect. Reach out to an expert 7. Additionally, the uniqueness and character of each individual piece can also affect its value. Discerning Victorian consumers resisted purchasing marbleized glass in some cases and preferred more decorative elements in crystal. The older piece, the greater value it has. I have a vintage slag glass desk lamp with the mark cCco on the plate that holds the shade on. 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 . Here is everything that you could ever want to know about slag glass. Check the bottom or inside of an item for either a name or logo of a manufacturer. This type of glass was used to make all types of glassware, including panels for lamp shades. White melts into a pale lavender when it intersects with the opaque purple. Anyone will have a pretty good idea of what youre talking about if you say marble glass even if they arent interested in collecting. Tiffany, Roycroft or Steuben lampshades made with slag glass can command prices of up to $20,000. 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. LAMP SHADE - Leaded slag glass lamp shade, TABLE LAMP - A four panel, dark green slag. Glass Type. 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. Jeannette Glassware, originally Jeannette Bottle Works, was founded in 1888. Shade measures 7 1/4" x 16 1/2". Over time, other companies like Imperial Glass, Akro Agate, and Westmoreland began producing and selling their own versions of slag glass. Quezal shades were often used in groups on a table lamp or chandelier. During the 1920s and 1930s, slag glass fell out of fashion and was replaced by more modern designs. Serious antique glass collectors will be familiar with "slag glass" which became popular in the late 1800s and is still made today. A similar look was created around the same time by U.S. manufacturers Northwood and Dugan. Slag glass is named after silicate slag, a colorful material that is a byproduct of molten steel. Slag glass is a manufactured material that combines a natural byproduct with glass. In this case slag, a by-product from iron smelting, is mixed into the molten glass before pressing. Since it is only partially mixed to create marbling, slag glass will have different tones of whiteness throughout the piece. Hanging Slag Glass Lamp, ca. At first glance the two can appear similar, but a close examination of the glass opacity will often be enough to differentiate one from the other. Purple is the most common slag glass color. 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. Don't turn your nose up at these vintage perfume and cologne bottles from Avon. Slag glass, also known as marble glass or malachite glass, is a type of opaque, streaked pressed glass. If they look and feel smooth and consistent, it was likely machine painted. I think the one c stands for a casting company. So keep your eye out for glass made by these companies from the 19th century. Lighting FixturesPettingell-Andrews Company, c. 1910, Gas and Electric LampsWelsbach Company, c. 1910. Slag glass also has a rough texture compared to other glass types. 2. Manufacturers usually make slag glass by mixing this silicate slag with clear glass. You can tell the age/authenticity of stained glass by looking at the glass that's used. This$13,464 pair of slag glass lampson Etsy is one example, along with this complete setfrom the Hilltop Steakhouse in the United States, being sold for an even $15k on eBay. Slag glass antiques will not simply have white streaks blended with another color, but possess a richer, deeper tone. The lamp stands 20.5" tall and weighs only 4 lbs in total. Love Immortal: Antique Photographs and Stories of Dogs and Their People. The base of slag glass is an opaque color, and the streaks are typically a milky white or cream color. In addition, slag glass panels were used in lamps, jewelry boxes, and other collectibles. 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. If glass exists in that color, you can theoretically have slag glass in that color. This common characteristic of slag glass can add to its unique appearance. 1230A - 10 1/4 Alpha Art Glass Green Vase Lamp. The term mosaic glass is much more inclusive and includes these pieces that look like slag glass but dont actually contain any slag. Many manufacturers used colored slag glass to create elaborate patterns in the lamp bases and shades, while others used the glass to create everyday scenes and landscapes. In addition, slag glass panels were used in lamps, jewelry boxes, and other collectibles. Real slag will always have a creamy marble effect. Popular slag glass lampshades shapes included mushroom, dome and flower petals. Slag glass is a type of pressed glass that is known for its brilliant and vibrant colors. Slag glass is named after silicate slag, a colorful material that is a byproduct of molten steel. If the metal is shiny, the glass is pristine, and the lamp generally looks newer overall, it might be a reproduction. Original Tiffany Lamps employed this metallic finish on the resin base. Another early slag glass was the purple malachite glass by Sowerby, which was sold in the United States under the name "blackberries and cream." 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. However, there are a few key . A glass decoration plant opened in early 1968. Prices go up significantly if a light is signed by a prominent manufacturer like Tiffany Studios or, to a lesser extent, Bradley & Hubbard. Start architect Friedrich Joachim Stengel has shaped Saarbrcken's cityscape like no other. Thanks for reading! The white marbling pattern on slag glass is a dead giveaway. It is relatively easy to identify slag glass if you know what to look for. As long as you consider the key characteristics marbled pattern, rough texture, translucent quality you should be able to identify it accurately. Vintage slag glass is a lot more restrictive in color options than recently produced pieces are. Happy hunting! This is due to the rarity of the color. These three manufacturers are very well known in the United Kingdom. Free shipping for many products! How to identify Fenton glassware 1. Very similar to the photo on page 182 of Paul Crist's book. 30 slag glass lamps for sale; 401-314-6005 (12-6 ESTime) non text# Email pictures to: Len.Daley@yahoo.com. "Slag glass" is a collectors' name for opaque pressed glass with coloured streaks, usually white and/or cream streaks like this brown bugle made by George Davidson's in the North East of England in the 1890's. The name derives from the belief that these colours were achieved by adding slag from iron smelting works to the glass. Click to reveal Most styles of vintage glassware have a plethora of names that they go by, and slag glass is no different. On the other hand, Tiffany Studios decorative items sold for several thousand dollars. The slag floats to the top, cools, and is collected to mix and make slag glass. 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. Although, the majority of slag glassware was created as decorative pieces. Happy collecting! In this guide, well cover everything you need to know about slag glassfrom its history to how its made, what its worth, and how to identify a vintage piece. 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. Antique lamps showing identification by Handel, Pairpoint, Tiffany, Pittsburgh Pilabrasgo Co., Duffner, Van Briggle, or Fulper show a collectible lamp. I grew up going to antique stores and markets with my mom and grandmother. The wiring is not original to the lamp; originally it would have had cloth covered wire. Handel lamps with metal overlays over slag glass are from the company's "Teroca Ware" line. 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. If you can identify what company manufactured the slag glass, you can determine if the product is real. Look for labels indicating the glass is made from recycled materials, such as Cinderella or marble glass..

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