Slag glass is a type of opaque pressed glass that includes colorful streaks that create a marbled effect. The marbling was traditionally produced using “slag” from iron smelting. Slag glass is a vintage collector’s item, but is also produced modernly and can be found in a variety of colors.

Aug 18, 2020 · Slag glass gets its name from slag, or the byproduct of steel production. When iron ore is smelted in that process, the remaining residue is a glass-like, often glossy material that takes on different colors depending on the minerals and elements present in the iron.

Jul 15, 2016 · Our culet glass comes from an old window and door factory near the Pine Barrens in Cinnaminson, New Jersey. Overflow glass would be poured from their furnaces and crucibles when their machines needed to be serviced. The overflow glass was essentially garbage.

Sep 14, 2023 · Slag glass is a man-made opaque base glass with marbelized swirls in a different color. Manufacturers used the glass in molds to make bowls, compotes, vases, plant cache pots, and more. In addition, slag glass panels were used in lamps, jewelry boxes, and other collectibles.

Slag glass is a type of pressed glass that is known for its brilliant and vibrant colors. These colors are created through different repurposing techniques. Learning how to identify and value this glass can help if you are looking to collect or just learn more about this interesting glassware.

Feb 10, 2025 · Slag glass is a term used to describe a type of colored pressed opaque glass made using the "slag" left over during the iron smelting process. This antique glass is known by other names including: Brown malachite

Vintage slag glass can be a collectors item, but contemporary versions are also extremely popular and thousands of items on still made today. In this guide, we’ll cover everything you need to know about slag glass—from its history to how it’s made, what it’s …

Sep 27, 2023 · Slag glass is the term used to describe a colored, pressed opaque glass made using ‘slag’ leftover from the iron smelting process. Slag Glass rock varieties come in different hues (hue is another word for “color”) and patterns.

Mar 18, 2020 · Slag glass" is a collectors' name for opaque pressed glass with colored streaks, usually white and/or cream streaks. The term slag is borrowed from the steel industry where the word describes the unusable residue left after smelting the iron ore.

Are you looking for lost or missing white metal parts for your slag glass or reverse painted panel lamp? Has your base or shade metal been compromised with poor past repairs? Finding the right person with the skill set and knowledge to restore this type of metal is difficult.