Free shipping on many items . Quick FAQ: -Yes, 99% of Handel lamps are marked. Vintage pieces can also be commonly found in a dark purple color. Large Signed Rousseau Art Nouveau Figural Lamp w/ Slag Glass Petal Shade. 8 Tips for Identifying an Antique Lamp Outstanding glass and color. Other manufacturers quickly caught on and the style rose in popularity soon following its creation. -Cracked, repaired, or otherwise damaged shades have virtually no value. How to identify a slag glass lamp - mylampsale.com Outstanding full floral Duffner and Kimberly dogwood lamp. L. G. Wright Glass - Guide to Value, Marks, History - WorthPoint I'm Stacy Jones and I love antiques! 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. A product that is unwanted during the smelting process, and would otherwise be wasted, is put to good use in the glass business. For example, simple things like a bowl sold for around $20 apiece. For todays collectors, slag glass is a greatly sought-after item that can go for a lot of money. 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? Hanging Slag Glass Lamp, ca. Learning how to identify and value this glass can help if you are looking to collect or just learn more about this interesting glassware. They still wanted the white streaks, and so they mixed purple glass with a white, opal-y, colored glass. Maybe inherited a Tiffany stained glass lamp or Handel lamp that needs a little love. As technology and manufacturing changed over time, new colors have been introduced to the slag design. Performance & security by Cloudflare. Brown malachite slag glass pieces are the rarest and most coveted colors of slag glass. The mosaic glass created in Pittsburgh was a mixture of purple and either white or an opal shade. CO. SLAG GLASS LAMP Base marked M.L. Related Posts: Cranberry Glass Decanter Q: This cranberry glass decanter belonged to my mother or; Jefferson Glass Co. Lamp Q: I have a Jefferson lamp with the numbers "2367"; Slag Glass Lamp Q: I'm looking to find some info on this slag; Tiffany Style Lamp Q: I recently acquired this "Tiffany" style lamp. 1. Vintage slag glass can be a collectors item, but contemporary versions are also extremely popular and thousands of items on still made today. Find Fenton markings 3. You can determine the age of a piece of slag by finding the date of production. When identifying authentic slag glass, pay close attention to the marbling. Antique Slag Glass Lamps | Collectors Weekly Lampshades and chandeliers were commonly produced out of slag glass. By following these tips, you should be on your way to spotting slag glass like a pro. Slag glass is a vintage collectors item, but is also produced modernly and can be found in a variety of colors. Saarbrcken campus | Universitt des Saarlandes Its important to note that newer slag glass pieces may not have as much character or value as older ones. The lamp stands 20.5" tall and weighs only 4 lbs in total. Over time, other companies like Imperial Glass, Akro Agate, and Westmoreland began producing and selling their own versions of slag glass. Take care not to break or damage the piece while examining it. Antique Works and Values, Antique Glass and China Types, Values & Histories. Bradley & Hubbard attributed table lamp A large octagonal paneled table lamp with green slag glass shade, #T9365 on base, #18 872 Meriden,. Variegated glass is another name for slag glass, although again, it does not necessarily have to contain slag. I'm Stacy Jones and I love antiques! The white marbling pattern on slag glass is a dead giveaway. Slag Glass information from the Glass Encyclopedia Have you ever seen a piece of glass and wondered where it came from? To help us improve user experience, we use Matomo to analyse how visitors interact with the website. Ding dong! There are several things to keep in mind when looking to identify whether something is slag glass or not. If they look and feel smooth and consistent, it was likely machine painted. Pieces from well-known manufacturers or in rare colors may fetch a higher price. You can determine antique slag glass with a few steps: Slag glass antique items can run anywhere in value from a low of $50 to a high of $1,500. Antique Purple and White Slag Glass Cake Stand, Antique EF Industries Green Slag Glass Table Lamp. Remember, the most common way to make slag glass was by skimming silicate material from the top of molten iron. Two vintage brown Sowerby figurines can sell for two completely different processes depending on how the marbling came out. Shade measures 7 1/4" x 16 1/2". This pattern looks like clouds or waves and can range from subtle to bold. 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. ALL RIGHT RESERVED. Be careful not to mistake slag glass for other types of glass that may have a similar appearance, such as milk glass or opalescent glass. 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. Cloudflare Ray ID: 7c0b058ee94819fc 100s Of Great Lamp Sockets - Original Antique Lamp Socket Tutorial 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. If you're hoping to add some historic charm to your home, antique chandeliers can be a wonderful choice. 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. A mark for Sowerby, Davidson, or Greeners will indicate a vintage U.K. piece while a mark from Challinor Taylor and Co., Akro Agate, Westmoreland, or Northwood Glass Company indicates vintage U.S. glass. Manufacturers used the glass in molds to make bowls, compotes, vases, plant cache pots, and more. How to Identify Slag Glass Types and Worth | Heirlooms at Home A glass decoration plant opened in early 1968. Your IP: 1. Brown and purple are the most common colors for vintage pieces but Sowerby, as well as other manufacturers, also created some pieces in blue and green with the typical white streaking. Slag glass was originally created in the United Kingdom in the 1890s by adding this slag substance during the glass-making process. 4,089. One item where slag glass was used often was in the creation of antique oil lamps, chandeliers and lampshades, particularly during the Art Deco and Art Nouveau periods during the late 19th and early 20th century. Vintage Slag Glass Value (Identification & Price Guides) - Noname Antiques 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. These are just a few of the companies that produce authentic slag glass. They moved across the Ohio River to Williamstown, West Virginia, and built a . You may also wish to polish the piece with a small amount of mineral oil for added shine and protection. Its worth keeping an eye out for unique slag glass pieces in unexpected places! Slag glass also has a rough texture compared to other glass types. Look for any imperfections or bubbles in the glass, which can indicate it is not true slag glass. Then, gently wash the piece using warm water and mild soap. Some famous makers include Tiffany Studios, Bradley Hubbard, and Handelwhose originals in good condition are very sought after. Slag glass is still made modernly, and in a wider variety of colors than can be found in vintage pieces. American Gilt Spelter Figural Putto Lamp, Pair of Louis XVI Style Patinated Spelter, 19C. Don't turn your nose up at these vintage perfume and cologne bottles from Avon. Where the slag is really concentrated it will appear milky white. The colors of slag glass are also a great way to identify authenticity. Handel Lamps - oldlampvalues Older pieces are worth more because as time goes on, antique slag glass is harder to find. Price Realized: $550,000. 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. Two of these patents, numbers 656891 and 774602, clearly depict the SUCCESS burner in their accompanying patent drawing. Contact Us. 1930s Traditional Slag Glass Lamp; Share. Real slag glass will not have a solid color but rather a blended, marble look. Most companies have halted the production of slag glass items altogether. 4. 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). 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 Slag Glass Lamp - Aspire Auctions 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! George Davidson is believed to have made this brown buglein the late 19thcentury, one of the first pressed glass pieces known today. This is a big part of why slag glass is so valued today. 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. Identifying the Base. However, since each piece will have very unique marbling patterns, the estimated value can vary greatly based on personal preference. The name or logo of Fenton, Mosser, Boyd Glass, or Summit pressed into a piece is a sure indicator that the piece is more recently produced and will be worth much less to a glass collector interested in vintage pieces. Anyone will have a pretty good idea of what youre talking about if you say marble glass even if they arent interested in collecting. Vintage Lamps and Lighting. The marbled pattern and swirled appearance of the glass add to its unique appeal and character. It has distinctive a distinctive knob pattern and comes in a variety of colors. 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. eBay (258) Magazine. Jeannette Glassware, originally Jeannette Bottle Works, was founded in 1888. Examine the lamp base and verify that it has a real bronze finish. A piece of slag glass will be worth more if it is a rare color or a rare item. Malachite stones have wavy striping in a green-tinged milky white on top of a darker green. This list is limited to only a few results.Many more items are available to our members through our Most slag glass replacement panels are completed the same week. These lamps rarely sell for less than 100 dollars. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Copper tone spelter. Of course, no discussion of antique lamps is complete without the Tiffany Pond Lily Lamp, circa 1903, which sold at auction in 2018 for a record-breaking$3.37 million. Without the need for the residue product of iron ore, the manufacture of mosaic glass exploded in Europe and the US and its popularity has not waned since. It was my grandmothers and is over 60 years old. 5.Your shipping address for return shipping quote. The dimensions Length x Height. 2)Inspect the color: Vintage slag glass can really only be found in brown, purple, green, and blue. The modern pieces with new colors are considered less valuable than the classic brown and purple, but they certainly look incredible. Verna Mae Wright died in 1990. Price Guides! The marbled effect is gorgeous on its own, but shining light through a complicated and colorful design is even more stunning. How Much Is Depression Glass Worth - ClubMentalHealthTalk.com This color pattern led to the "brown malachite" and "brown marble" names. Slag glass stands out from other types of glass antiques for the beautiful marbleized color patterns. 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. Handel Teroca lamps were so successful that the next line of lamps introduced were called Teroma. A similar look can be produced using multiple colors of glass mixed together, each individually colored using various compounds. antique chandelier lamp parts, ornate embossed brass bobeches for lights. Slag glass is also sometimes used to refer to marbled glass pieces that didnt technically use slag as an additive. This leads to marbling in the colors of the glass. FIGURAL SLAG GLASS LAMP. You can tell the age/authenticity of stained glass by looking at the glass that's used. There continues to be a vibrant market for antiques of all varieties due to their breathtaking beauty and exquisite designs. Opalescent or iridescent glass can be worth more. Slag Glass Panel Lamp By the Empire Lamp Company with Two Color Shade. Handel Lamp Authentication Guide | Identify Handel Lamps | Handel Lamps However, the popularity waned at times. The SUCCESS burner was Pilabrasgo's "claim to . Love Immortal: Antique Photographs and Stories of Dogs and Their People. French Art Nouveau "La Serenade" Figural w/ Slag Glass Shade . The chart below highlights some recently sold slag glass items. Mineral Identification Labels (#185769230073) o***l (1621) - Feedback left by . This byproduct can then be pulverized and used as a glass additive. Exceptional lamp. Vintage glass pieces come in so many different colors, types, and styles with different names for each variety. Lamp sockets - Genuine antique replacement sockets (Lighting) The history of lighting fixtures can be researched back to the cave days. To determine if an item is true slag glass or if its a combination of two molten glasses, consult a vintage glass appraiser. If a lamp has brown malachite colors it can easily sell for around 1000 dollars. Slag glass, also commonly known as Malachite glass, is pressed glass made in the same way as Milk glass, but with coloured streaks to create a marble effect. Identifying slag glass can be a bit tricky, as there are many different types and colors of slag glass. How To Identify Slag Glass by Dr. Lori - YouTube Slag glass gets its name from slag. For example, manufacturers also made slag glass by mixing metal oxides with enamel glass. Happy hunting! If you're examining a glass kerosene lamp, look for a brass collar. The marbling should be a creamy white color that is evenly mixed into the base color. List of Vintage Lamp Manufacturers - RetroWaste The term slag refers to the molten run-off that is produced during iron smelting as the metal cools off. To clean slag glass, first, remove any dirt or debris with a soft brush. This is listed on the bottom of most slag glass items, especially lamps. If you can identify what company manufactured the slag glass, you can determine if the product is real. Marble design mushroom shade has a 7 1/2'' dia. It is hard to keep fragile glass intact for decades. Restoring bent slag glass antique lamps with museum quality SINCE 1978. Antique Slag Glass Lamps. The key identifying feature of this type of glass is its similarities to the patterning found in natural marble. The Pittsburgh Lamp, Brass & Glass Company - The Lampworks By clicking Accept, you agree to our website's cookie use as described in our Cookie Policy. This is the most difficult distinction to make if youre not a professional. Note the glass type 5. The original slag glass is brown with creamy streaks, a similar pattern to how your cup of coffee looks when you first pour in milk or creamer. Two glassmakers in Pennsylvania, Harry Northwood and Thomas Dugan, were the first to imitate slag glass by mixing two colors of glass together and forgoing the actual slag in 1902. The value of vintage slag glass, as with any antique, will depend on the quality of its condition, time period, and most importantly, the manufacturer. The action you just performed triggered the security solution. In addition to technically necessary cookies, this website uses the web analytics software Matomo. Depending on the rarity of the item, slag glass is worth anywhere from $50 to $1500. Happy collecting! A well-crafted piece of slag glass with the right ratio of additive and correct amount of mixing will strike the perfect balance between looking too chunky and looking too homogenous. [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''. It is the skill with which original copper foil shades were assembled that largely separates vintage shades from modern reproductions and most fakes. Mosiac glass is sometimes used interchangeably with slag glass, although there are some technical differences. Challinor Taylor & Co. was one of the most prominent American Slag glass manufacturers. American companies (Taylor, Northwood, Dugan, Akro Agate, Westmorland) began manufacturing this type of glass during the late 19th to early 20th century. 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. This slag is predominantly binary compoundsof elements such as silicon, sulphur, and aluminium reacting with the sides of foundry molds. In your brief description you failed to mention condition or the presence or absence of any marks or numbers on the base of the lamp. Hanging Slag Glass Lamp, ca. 2022 HEIRLOOMS AT HOME & AGELESS HEIRLOOMS. Slag glass producers mark their products with the companys initials or the companys logo. These colors are created through different repurposing techniques. Tiffany Lamps: Price Guide and How to Identify an Original - Invaluable Save my name, email, and website in this browser for the next time I comment. The key identifying feature of this type of glass is its similarities to the patterning found in natural marble. One of the most common alternate names for slag glass is marble glass, for obvious reasons. Thanks for reading! The company, based in Jeannette, Pennsylvania, rebranded in 1898 and took on the name Jeannette Glassware. The marbling should be a creamy white color that is evenly mixed into the base color. 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. Oftentimes the pieces labeled as variegated glass have more stripey streaks in contrast to the more organic swirls of a true marble pattern. A more specific title for this type of glass would be mosaic glass. Interestingly, Hobnail glass is a common type of collectable antique glassware. I think the one c stands for a casting company. As with any glass type, or art in general, different circumstances and people have adopted different names for slag glass. Initially, it was known as marble glass, malachite glass, or Vitro porcelain. Assuming your lamp isn't marked, then we have to move onto other steps to figure out if it is authentic. 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. Challinor would instead combine two colors of molten glass. McCrory and Kresge also were major customers. A Hanging Slag Glass Lamp, circa 20th Century Six sides of milky slag glass in a metal frame with a copper finish. Fenton produced quality glass, so you should not find any defects like bumps or air bubbles . How to Identify Slag Glass | 10 Easy Steps (2023) Handel Lamp Guide - Authenticate, Value, Sell | Handel Lamps 6 Tips for Identifying Fenton Glass. Look for age-related wear or markings on accompanying hardware, such as lamps or furniture. The ecology website also notes that slag glass can be incorporated into landscaping designs or used as decorative stones in gardens and ponds. How to Identify an Antique Oil Lamp | Hunker