Both styles create the same swirl effect, and originals of both are considered vintage and valuable. 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. Whats the difference between Slag Glass and Stained Glass? Find Fenton markings 3. They still wanted the white streaks, and so they mixed purple glass with a white, opal-y, colored glass. Consult a professional or experienced collector if youre unsure about a pieces authenticity. 2. Est. (History, Series & Value). 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. Egyptian patterns were also common due to the interest in the tomb of King Tut in the early 1920s. If the metal is shiny, the glass is pristine, and the lamp generally looks newer overall, it might be a reproduction. Identifying Silhouette Slag Glass Lamp In Antique American Lighting, Antiques, Uncategorized on February 8, 2016 at 7:02 pm. 4,089. Sowerby was a popular producer of this blackberries and cream slag look. Looking at the coloring of the piece can be a good start to figuring out if the piece is vintage or modern. Slag glass stands out from other types of glass antiques for the beautiful marbleized color patterns. The worth and value of slag glass varies. A few examples of modern glass manufacturers operating out of the US today are Boyd Glass, Mosser, and Summit. Doyle New York, New York, NY (September 2004) Slag Glass Identification. Exceptional lamp. Sowerby also created several other color formulas including Giallo (yellow), Pomona (green), and Sorbini (blue). Check the bottom or inside of an item for either a name or logo of a manufacturer. 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. Figural Spelter Lamp, boy holding a cornucopia, ART DECO FIGURAL MAIDEN TABLE LAMP: Patinated, ORIENTALIST AUSTRIAN COLD PAINTED SPELTER, Sgd. See the patent table below for details. Manufacturers usually make slag glass by mixing this . A glass decoration plant opened in early 1968. 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. Mixing antique pieces with modern amenities is a popular decorating technique.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'antiqueanswers_com-large-leaderboard-2','ezslot_8',165,'0','0'])};__ez_fad_position('div-gpt-ad-antiqueanswers_com-large-leaderboard-2-0'); Jeannette Glassware, originally Jeannette Bottle Works, was founded in 1888. Popular slag glass lampshades shapes included mushroom, dome and flower petals. (See below for more info on marks.) Prices go up significantly if a light is signed by a prominent manufacturer like Tiffany Studios or, to a lesser extent, Bradley & Hubbard. $1,200 Sale Price 14% Off . 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. The older it is, the higher in cost. Antique lamps showing identification by Handel, Pairpoint, Tiffany, Pittsburgh Pilabrasgo Co., Duffner, Van Briggle, or Fulper show a collectible lamp. This material takes on different colors depending on the minerals and elements that are present in the iron. One of the most common applications of vintage slag glass is in lighting. Sotheby's, New York, NY (December 2017) Estimate: $300,000 - $500,000. Fenton Glassware: Identification and Value Guide - Antique Mall Browse Similar. They also began producing opaque golden, creamy colored glass known as caramel slag that allowed the passage of enough light to give a room a soft, warm, golden ivory glow. Instead of slag, they mixed purple glass with a white-colored glass that did not contain any iron slag. Antique Slag Glass Lamps - Etsy One of the best ways to check if your slag glass is real is to look for the names and marks of manufacturers. Outstanding full floral Duffner and Kimberly dogwood lamp. The value of slag glass can vary greatly depending on factors such as age, condition, and rarity. A reader sent me the above photograph with a request that I identify the above lamp. Quick FAQ: -Yes, 99% of Handel lamps are marked. Spelter Newel Post Lamp w/ Czech Glass, FRENCH ART DECO SPELTER FIGURAL LAMP, Circa. Two of these patents, numbers 656891 and 774602, clearly depict the SUCCESS burner in their accompanying patent drawing. One of the most common alternate names for slag glass is marble glass, for obvious reasons. $1,551 57% Off $3,600. Slag Glass Lamp | Ruby Lane This roughness is caused by the recycled materials that make up slag glass, making it different from smooth stained or flashed glass. Its important to note that the coloration of slag glass can also vary depending on the lighting, adding to its distinct charm. 1. Peachblow glass - This glassware was made by many companies and is very collectible. Antique Slag Glass Lamp, 8 panel umbrella. Save my name, email, and website in this browser for the next time I comment. Some famous makers include Tiffany Studios, Bradley Hubbard, and Handelwhose originals in good condition are very sought after. Tiffany . Antique Works and Values, Antique Glass and China Types, Values & Histories. All slag glass will be a marbled mix of some opaque color with opaque white. 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. Happy searching for your favorite color of slag glass! Prof. Dr. Ralf Busch | Faculty of Natural Sciences and Technology These are 2" in diameter at the fitters, and 1 . 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? A Fenton hobnail 4 1/2-inch vase can go for $15 to $50. If it feels bumpy or uneven, its likely slag glass. Tiffany lamps are famous for the vibrant colors and varied textures used in the glass design. If you suspect that the piece may be vintage, check for age-related wear or markings on the glass itself or any accompanying hardware, such as lamps or furniture. Challinor Taylor & Co. was one of the most prominent American Slag glass manufacturers. Other manufacturers quickly caught on and the style rose in popularity soon following its creation. 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. History. 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. (Source). If the piece is pink, orange, or red it is not vintage. Unsigned decorative glass items like compotes and vases tend to sell between $5 $50, even if they are from the 19th century. Slag Glass Identification and Valuation - Antique Answers Where the slag is really concentrated it will appear milky white. 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. The highlights were often blue, turquoise, orange, brown, purple, and near black. Fenton Rose Pastel Hobnail 4 1/2-inch Vase. This incredible glass. Determining slag glass worth will vary in difficulty depending on what youre looking for. The older piece, the greater value it has. Slag Glass - Kovels The factory at one time was owned by the former West Virginia Glass Company. I have a vintage slag glass desk lamp with the mark cCco on the plate that holds the shade on. 2023 Active Interest Media All rights reserved. Imperial Glass introduced its iridescent (carnival) glass line in 1909. In exceptional condition. Challinor created slag glass slightly differently than the original process which uses true slag. Slag glass is commonly found in antique lamps and light fixtures but can also be used for decorative windows or tiles.
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