Although cobalt glass is available anywhere that … These include items ranging from small figurines to larger bowls made of red glass several decades ago, so they are collectible but not yet antique. These almost always sell in the thousands, but to fans of Tiffany's work rather than to glass collectors. This glass is a by-product of mining gold from back in the old days ( likely 100+ years ago) I personally found this slag glass outside lake las vegas, in Nevada. There was also Challinor, Taylor & Company, who excelled in smaller slag glass home goods, like these multi-color salt and pepper shakers, from the closing years of the nineteenth century. She's written over 400 articles on antique collecting for The Spruce Crafts. The. That doesn't mean it isn't valued by collectors, however.Â. 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. "Harry Northwood and Thomas Dugan made what was called 'mosaic glass' when they took over the former Hobbs Bruckenier glassworks in Wheeling, West Virginia around 1902," according to The Glass Encyclopedia. "Sea glass" is physically and chemically weathered glass found on beaches along bodies of salt water. Challinor, Taylor, and Co. also made their own version of this type of glass around the same time. They transitioned in the 1930s into pressed slag glass designs, like these paired vases, to expand their reach (although, they preferred to call their pieces “multi-colors” rather than “slag glass”). Slag glass gets its name from slag, or the byproduct of steel production. Tony Alter / Flickr / CC BY 2.0. The final question to contemplate, though, is the value of these pieces. Lot 391: A Tiffany Studios ‘Drop-Head Dragonfly’ table lamp circa 1910, Andrew Jones Auctions, Los Angeles, CA (15 September 2018) Sold: $160,000, Lot 30: Tiffany Studios Pine Needle Picture Frame,  Toomey & Co. Auctioneers, Oak Park, IL (2 December 2018) Est: $2,000-$4,000. However, perhaps the biggest indicator of price is the maker of the work: signed, , can sell in the tens of thousands, while the diminutive and delicate collectibles like this. For example, Westmoreland conjured this, ” covered dishes, while Boyd developed a specialty for the novelty figurine, like this, . Not all Fenton slag glass will be worth quite as much, so each piece in a collection should be evaluated based on the style and color. Fulgurite can be helpful in instances of low or constricted physical energy. Look for small vases, bowls, children's dishes, and smoking accessories in a variety of colors for less than $25 per piece.Â. Update your email preferences at any time. Because vintage glass is a wide category that includes many different glass types, patterns and colors, it can be difficult to correctly identify vintage glass. Akro Agate is an American company that marked most of their wares ranging from children's dishes to small decorative flower pots. Glass rocks are an eco-friendly and long-lasting product that will continue to look great, year after year. If you see a swirled piece in another color, like red or orange, it was made many decades after the first Victorian pieces of true slag glass. Pamela is an antique expert and the author of three books on the subject. Natural pozzolanas are abundant in certain locations and are extensively used as an addition to Portland cement in countries such as Italy, Germany, Greece and China. 5 out of 5 stars (110) $ 34.99. With the export of these beautiful creations to the United States market, nineteenth-century American producers also entered into slag glass production. It is slag-like, opaque material found as vesicular free forms or sheet-like/ropy masses. Regardless of which technique was used by various makers, slag glass reflected a brilliant repurposing of materials otherwise resigned to the refuse bin, resulting in some of the most dynamic and eclectic colors known within the glassmaking industry. It is perhaps thanks to this novelty that the introduction of slag glass in the later years of the nineteenth century resulted in excitement from, With the export of these beautiful creations to the United States market, nineteenth-century American producers also entered into slag glass production. Cobalt glass is any glass that has been combined with small amounts of copper and cobalt to produce a blue appearance. 5 out of 5 stars (98) $ 11.99. Email. Lot 255: Arts & Crafts Chandelier, Sconces, Steuben Shades, Wickliff & Associates Auctioneers, Inc., Carmel, IN (17 February 2018) Est: $1,000-$2,000. These included Atterbury & Company, who was one of the United States’ earliest producers of slag glass. Crafting set of 8 TEALIQUE. Carnival Glass Identification and Value Guide, How to Collect Antique American Brilliant Period Cut Glass, Types of Colorful Glass Used in Vintage Kitchenware, Fenton Art Glass Identification and Value Guide, Overview of the Quezal Art Glass and Decorating Company. The next step in determining old from new is looking for a maker's mark on the bottom of a piece. Perhaps the most celebrated examples of twentieth-century American slag glass are those of the, With this extensive popularity of slag glass among these producers, collectors can find numerous examples of antique and vintage, Condition is a big factor, as is age – newer vintage pieces tend to sell for less than earlier antique examples. Mar 25, 2018 - Explore Raette Kaiserlian's board "Slag" on Pinterest. It is located throughout a semi-continuous swath in baked pod-like clay-bearing sediment in an area of about 55 kilometres long by 10 kilometres along the western side of the Flinders Ranges near Parachilna and east of Lake Torrens. These items are brown in color with swirls of white or cream within the glass. According to methods for cooling molten steel slag, steel slag is classified into five types: natural air-cooling steel slag, water-spray steel slag, water-quenching steel slag, air-quenching steel slag, and shallow box chilling steel slag … Vintage rough slag glass rock pieces multicolored bundle clear & green 1” chunks Have Fun! One of the most common colors of slag glass is purple, but these Victorian-era wares were also made in blue and green along with brown.Â. Meanwhile, imitation slag glass, like this early twentieth-century ashtray, reveals an unusually uniform color. But when the term "midcentury glass" comes up, it references art glass pieces made by many different companies during this period. How to Identify Antique and Vintage Glassware Styles, 24 Good Luck Charms from Around the World, Baseball Card Values and How to Determine Their Worth, The Fifteen Most Expensive Books & Manuscripts Ever Sold, The American Regionalism Movement: Shaping the Art of the Nation, A Guide to Identifying and Collecting Antique Mirrors, 16 of the Most Famous Oil Paintings You Should Know. When melted together, these colors took on a marbling similar to that seen in iron slag. Another factor is slag cement’s nearly white color. These weathering processes produce natural frosted glass. " I included a picture from someone who had refinished their cabinet. Newer glass by Fenton, Boyd, and Mosser may also be marked. Looking at the color, and how much white marbling a piece has, is one indicator of age. Price Guide and History, Early creators of slag glass were rumored to incorporate pulverized fragments of iron slag chunks into their molten glass, before pressing it to accomplish the rich variety of colors seen in these glass pieces. Thereof, how does the Mohs hardness scale work? Lot 739: Atterbury & Co. Slag Glass Kerosene Lamp Base, Jeffrey S. Evans & Associates, Mt. Only 1 available and it's in 1 person's cart. Slag glass, a type of opaque, streaked, antique pressed glass that originated in England in the late 19th century, was used in glassware items such as lampshades, jugs, wine glasses and beakers. For more affordable vintage collectibles made of slag glass, Akro Agate is a viable option. Some of the most costly slag glass pieces take the form of lampshades by well-known makers like Handel, Bradley Hubbard, and Tiffany. … From shop Allybeans. See more ideas about leland blue, slag, leland blue stone. There was also Challinor, Taylor & Company, who excelled in smaller slag glass home goods, like these, , from the closing years of the nineteenth century. Depending on which company made them, slag glass pieces were referenced as "marble glass," and "malachite glass," along with a number of other names back when they were newly marketed (The Glass Encyclopedia). 99. Slag cement requires nearly 90% less energy to produce than portland cement. Some slag concretes have a slag component of 70% or more of the cementitious material. Volcanic ashes and pumices largely composed of volcanic glass are commonly used, as are deposits in which the volcanic glass has been altered to zeolites by interaction with alkaline waters. However, perhaps the biggest indicator of price is the maker of the work: signed Tiffany Lamps, like this spectacular Dragonfly Lamp, can sell in the tens of thousands, while the diminutive and delicate collectibles like this Boyd train set sell for mere dollars. This article strolls through this history and highlights some of its most popular forms for those who want to surround themselves with exceptional slag glass pieces. ASTM C 1073 covers a rapid determination of hydraulic activity of 59 Chapter 3 Fly Ash, Slag, Silica Fume, and Natural Pozzolans Fig. 4.3 out of 5 stars 18 ratings. Blue Slag Glass Jewelry | Natural Blue Sea Glass Pendant | Turquoise Gemstone from Lake Michigan | Leland Blue Stone Jewelry Bead Seaglass Allybeans. Of course, brown was not the extent of their color palette: Sowerby especially experimented with a wide array of colors, including their vibrant giallo (yellow), sorbini (bright blue), and pomona (a muted green) shades. Like so many fields of collecting, slag glass can be acquired at a wide variety of price points. Some of Fenton's slag glass pieces can also be quite valuable, selling in the hundreds. Early creators of slag glass were rumored to incorporate pulverized fragments of iron slag chunks into their molten glass, before pressing it to accomplish the rich variety of colors seen in these glass pieces. Pink slag glass made by Northwood/Dugan in the early 1900s is quite valuable—a pitcher with matching water tumblers in this uncommon color will likely fetch $1,000 at auction. According to the Slag Cement Association, substituting 50% slag cement for portland cement reduces greenhouse gas emissions by more than 40% and lowers the embodied energy of concrete by more than 30%. What Slag (or Cullet) is, is the end pieces from a glass factory. ASTM C 989 (AASHTO M 302) classifies slag by its increasing level of reactivity as Grade 80, 100, or 120 (Table 3-1). Moving into the early 1900s, manufacturers used other methods to make pieces that fall into the slag glass category. Steel slag can also be produced by smelting iron ore in a basic oxygen furnace. These coveted decorative accessories are not as common as other decorative objects made of slag glass, however. Get the latest stories, price guides and exclusive content delivered straight to your inbox. So celebrated are their designs that they rank among the collections of the world’s most prestigious museums, like this. Lot 1330: A Tiffany Studios Favrile Glass and Gilt Bronze Dragonfly Table Lamp, Hindman, Chicago, IL (October 9, 2012). They created beautiful pieces like this striking kerosene slag glass lamp base, from 1860 to around 1900. The Sowerby firm in England filed one of the first patents for slag glass during the later years of the 1870s for their striking purple malachite glass. Blue Slag Glass Necklace - Petoskey Stone Necklace - Michigan Stone Jewelry - Fossil Necklace - Nature Lover Gift - River Rock - Beach Stone GiannasJewelryBox. 5 out of 5 stars (2,119) 2,119 reviews. Slag glass gets its name from slag, or the byproduct of steel production. Okay, did some more research and found out it is Slag Glass a by product from the 19th century iron forging in the... Found in Wawayanda State Park, New Jersey. Though it is known by several names, slag glass is a variety of pressed glass that is universally celebrated by collectors for its characteristically subtle variations in color and opacity. Slag Glass Boulder ~ Blue ~ Crystal Brand: Kristmas in July. ‘Mineral fiber insulation, including fiber glass and rock wool, is produced from either molten glass, slag, or rock.’ ‘There were areas of bare rock and slag, which were around old gold mines, according to the naturalist.’ ‘The stats and history of this limestone slag heap are impressive in their own right.’ Get it as soon as Wed, Feb 10. With excess phosphate in water being a significant issue in the Chicago-Gary area, this benefit from slag could be another use for the material and could decrease the need to mine new natural materials for water treatment applications. It … Perfect for a quiet space where reading and re… The benefit of this incredible price range is that the slag glass market is accessible for virtually any budget and can satisfy those seeking bold statement pieces as well as smaller accent decorations. Cobalt glass has been discovered in ancient Babylonian sites, but it was not produced commercially until the late 1800s. sell for mere dollars. Slag glass was often used in lampshade production as well as for crafting many different types of decorative objects.Â, American company Washington Beck made molds for slag glass factories in the United States and England in the mid- to late-1800s. Lot 299: Tiffany Studios Bronze Slag Glass Jewelry Box, Hill Auction Gallery, Sunrise, FL (29 November 2017) Est: $1,000-$3,000. housed at New York’s Metropolitan Museum of Art. Item Natural Clear Color Green Slag Glass Rock for Garden Landscaping and Gabion Color Clear Green, Size 3 - 60 cm Piling Density 2.5 tons / cubic meter Packing 1 metric ton per crate, or Gabion box MOQ 1 metric ton per color, in total 1x 20' container is perfered. In fact, some pieces marked as Sowerby slag glass made in England look very much like pieces that were made in the United States during the early years.Â. Get DIY project ideas and easy-to-follow crafts to help you spruce up your space. However, slags can contain metal sulfides and elemental metals. Adding to the beauty of slag glass – also known as malachite glass, marble glass, and mosaic glass – is its rich history that reflects the ingenuity of turn-of-the-century glassmakers. Figuring out who made a piece, and how old it is, can be a bit more tricky. So celebrated are their designs that they rank among the collections of the world’s most prestigious museums, like this goblet housed at New York’s Metropolitan Museum of Art. Perhaps the most celebrated examples of twentieth-century American slag glass are those of the Art Nouveau and Art & Crafts era, such as Tiffany Studios, Steuben, and Roycroft, all of whom sensed that the natural variation in the marble textures would complement the organic sensibilities of their designs. $24.99 $ 24. Be suspicious of highly transparent forms, unless the mine is identified and known.Natural transparent Obsidian usually occurs as small … When melted together, these colors took on a marbling similar to that seen in iron slag. It can help in healing blockages and strengthening blood flow in the extremities and capillaries. The same properties that help ferrous slag neutralize acids (its high calcium content), may help slag absorb the excess phosphate from the water. Nov 21, 2019 - Explore Rhonda Gail Spicer's board "SLAG GLASS", followed by 133 people on Pinterest.