Slag Glass Lamps

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Slag glass has a backstory that adds to the interest in owning one of these types of lamps. In 1890s England, glassmakers began adding cooled down silicate “slag” formed on the top of molten iron to their glassmaking process. The pulverized slag would be added to liquified glass to create a beautiful marbling effect. The earliest examples of slag glass had a brown, purple, blue or green base color mixed with streaks of a creamy white color. Orange, pink and red colors were more recent color additions. 

10 Recommendations and 170 Ideas

Updated 19/04/2022
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Arts and Crafts Slag Glass Lamp

Arts and Crafts Slag Glass Lamp

A true example of the Arts and Crafts period, this vintage lamp was crafted in the early 20th century. The lamp has been correctly rewired for two standard light bulbs. Each bulb turns on by a pull chain.

Designer Advice:

The glass panels on this exquisite Arts and Crafts style slag glass table lamp have alternating shades of caramel slag, which give a subtle variation when the lamp is turned on. The shade is original and measures 16” in diameter. The heavy base is made from cast iron with a zinc or pot metal center section, common to the era.

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Art Nouveau Slag Glass Lamp

Art Nouveau Slag Glass Lamp

World Menagerie

Easy to assemble, no tools are needed to attach the pretty honeycomb mosaic slag glass shade to the curved Art Nouveau base. A single 100 watts LED light bulb is included with this lamp and turns on and off with a rocker switch located on the cord.

$129.99 $136.99

Designer Advice:

The slag glass on this lamp is primarily white, which affects the color of the cool light cast by the light bulb. If you’re looking for a softer glow in your room, install an amber light bulb to create a warmer light. The lamp stands 20.5” tall and weighs only 4 lbs in total. 

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Tiffany style Slag Glass Lamp

Tiffany style Slag Glass Lamp

Bloomsbury Market

Vintage in design, this butterfly lamp requires an LED-compatible 60 watt light bulb. Dust regularly with a soft, dry cloth to prevent soil build up and keep the light shining clearly and cleanly through the slag glass.

$109.99 $119.99

Designer Advice:

At 14.56” tall, the small scale of this Tiffany-style slag glass lamp is ideal for use as a night light. It can also be used as an art accent on a side table or desk or as two soft bedside table lamps. The slag glass shade colors will look darker and more subdued until the lamp is turned on.

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Lotus Pendant Slag Glass Lamp

Lotus Pendant Slag Glass Lamp

Sixteen stunning green glass petals create a unique lotus pendant slag glass pendant. Each petal is joined together with decorative metalwork edging that mimics floral accent lace. The vintage lamp dates back to the 1950s and is in excellent condition with no breaks in the glass.

Designer Advice:

This lamp measures 17” across and lets you remove the top layer of 8 petals if you’d like a single layer look to the lamp. The pendant light style holds a standard light bulb and can accommodate a Fat Albert-style bulb as long as its base is also a standard bulb design.  

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Table Slag Glass Lamp

Table Slag Glass Lamp

This large vintage slag glass lamp was made in the 1920s and holds three light bulbs. The lamp shade can be adjusted to sit higher than its regular 26” height, letting more light illuminate the surface on which it sits.

Designer Advice:

The classic marbling in the glass panels are held together with intricate lacy metalwork in a gorgeous Art Nouveau style. The metalwork looks like cake design detailing and is perfectly suited for any but the most modern or contemporary design styles. The base is constructed of metal from the era rather than modern resin.

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Reproduction Slag Glass Lamp

Reproduction Slag Glass Lamp

Lite Source

This beautiful table lamp holds two 60-watt light bulbs and has a separate pull chain for each bulb. Bulbs are included with the lamp order. The heavy dark bronze metal base is finished with a poly resin and ensures the sturdiness of the lamp.

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Dragonfly Slag Glass Lamp

Dragonfly Slag Glass Lamp

Canora Grey

Made with real Tiffany glass, the four-sided shade combines reproduction slag glass with stained glass dragonfly designs. The resin base looks of the era and the shade is held in place with a standard harp frame. Uses one 10 watt (60 wall equivalent) A19 LED smart bulb.

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Tulip Slag Glass Lamp

Tulip Slag Glass Lamp

From the ceiling mount to the bottom of the shade, this antique slag glass pendant light measures 20 ½” long. Each tulip petal is free from cracks or chips in the glass and is laced together with delicate floral ironwork. 

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1930s Slag Glass Lamp

1930s Slag Glass Lamp

Circa 1930, this vintage slag glass lamp has four panels that show the classic white, cream and caramel marbling seen in the best slag glass lamp. The iron base and panel detailing show the delicate detailing of the early 20th century.

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Antique Slag Glass Lamp

Antique Slag Glass Lamp

Simple in design, this antique leaded slag glass Arts and Crafts table lamp is in excellent condition. All glass panels are original to the early 20th century. The lamp holds three light bulbs and the shade adjusts in height from 18” to 24” tall.

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Slag Glass Lamps

Buying Guide

No other material created during the Art Nouveau period has produced as much adulation as slag glass. From lampshades to décor pieces, marbled glass in a bounty of interesting colors with those alluring swirls was everywhere.

Imagine sitting in a room lit by an antique slag glass lamp. The swirls of light cast mysterious shadows on the wall making for an incomparable experience.

Today, slag glass or malachite glass is no longer produced the way it used to be. However, antique slag glass lamps in mint condition command a hefty price tag and are considered a collectible.

Having said that, the market is rife with cheap replicas and counterfeits. It pays to be aware of what to look for if you are out shopping for one.

What is slag glass?

Slag glass was created by adding a metal ore to amber glass which is what gave it the distinct color and pattern.

Some of the most popular colors created in the early days were purple, blue, turquoise green, golden and brown (extremely rare).

The most noted manufacturers were Sowerby, Greener and Davidson in Europe and Challinor, Taylor, and Co, Westmoreland and Akro Agate in America.

How do you identify authentic slag glass?

The chances of that antique slag glass lamp that you fancy being marked by the manufacturer are extremely slim. Most manufacturers in those days just added a series of numbers below the base of the lamp rather than adding an ornate logo.

So, the only way to identify an authentic slag glass lamp might be to carry it to an expert and qualified antique dealer. The other and easier option of course, is to buy from a reputed source. Definitely not eBay.

What other materials are used in antique slag glass lamps?

You’ll often find slag glass in metal frames and overlays with intricate designs, mosaics, and motifs. Brass, bronze, solid oak wood and iron are commonly used materials for the frame and the base.

How much is an antique slag glass lamp?

Time and again, we come across too good to be true deals for antique slag glass lamps. Well, if it’s too good to be true, it’s probably junk.

Authentic slag glass lamps can be priced anywhere between $150-$2000 and more, depending on the condition and the item. If someone’s selling one for $25, then it’s most likely a fake.

What designs of slag glass lamps are there?

From Tiffany lamps to silhouette lamps and even elaborate chandeliers, slag glass was used in just about every style of lighting in those days.

While you can always stay safe with your choices, there are some very interesting and creative pieces like Tiffany’s umbrella or mushroom shades, the Philippine shell inspired designs and the five-light lily lamps.

What kind of antique slag glass lamp is best for my space?

Your choice should depend on the intended use of the lamp. If it’s a bedside table, then Tiffany lamps or silhouette styled lamps work best.

When it comes to silhouette, you can pick from an array of interesting motifs to cast on the walls. Tiffany styled pedestal lamps with a long arm make for fantastic focal points in living rooms.

Antique slag glass lamps will be a perfect addition to your home, especially if your décor draws inspiration from vintage arts and crafts periods like Art Nouveau or Art deco.

Best Ideas

Antique miller art nouveau slag glass lamp

Antique miller art nouveau slag glass lamp

This classic table lamp is made only of brass and glass. Lampshade is one color version of stained glass work - it looks very original, because it presents natural motives and scenes from every day, rural life.

Antique slag glass lamps

This beautifully designed antique lamp is a combination of a solid metal leg with a decorative lampshade representing an incredible scene. The whole is beautifully decorated in beautiful colors, and the subtle glass lampshade is delightful.

Antique Slag Glass Lamp

Antique Slag Glass Lamp

Stained-glass antique lamps are usually associated with the Tiffany elegance - but there are also more affordable, commercial projects such as the one - slag glass lamp with a mosaic creating in the glass and a black frame urban landscapes.

Antique glass lamps

Astounding art nouveau lamp in Tiffany style, with green slag glass umbrella (or upended tulip) shade. Curvilinear design incorporates foliate and floral scrolling. On top there's a fancy finial. The base is bronze.

Slag lamp

If you think that's something's missing on your table, then, you could easily spice it up with this marvelous table lamp. It's made of green glass that sits in the rustic frame with amazing metalwork. Measurements: 23 3/4" H x 20" W.

Antique Slag Glass Lamp With Lighted Base Circa 1915

Antique Slag Glass Lamp With Lighted Base Circa 1915

Antique approach to a slag table lamp made out of wrought iron frame elements surrounded by matte, opaque glass in a yellow color. The frame of the lamp has a second light inside of it, making the glow even brighter.

Bradley and hubbard lamps

A beautiful antique electric table lamp having a brass frame with a round base with floral patterns and a club-like vertically grooved stem. Its dome-inspired hexagonal lampshade of colourful glass features intricate floral designs in a lower part.

Early 20s slag lamp love the scenes with the 2

Early 20's slag lamp. LOVE the scenes with the 2 different colors.

Antique slag glass lamp shade trees cottage etc ebay

Antique Slag Glass Lamp Shade Trees Cottage Etc | eBay

480 antique slag glass lamp salem brothers 1


Slag glass lamp antique slag glass lamp shades slag glass

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Slag glass lamp 5

Stylish table lamp mounted on richly decorated base. It is made of metal and glass. Suitable for residential and commercial premises. Elegant accent for living room, bedroom and more.

Antique slag glass lamps 20

Table lamp for all kinds of interiors according to taste and need. Metal frame with antique finish is decorated with interesting pattern. Lampshade is covered with colorful glass and gives warm tone of light.

233 vintage slag glass table lamp


Pair of really nice antique wilkinson slag glass lamps for

Pair of really nice Antique Wilkinson slag Glass Lamps for sale in ...

Antique art crafts deco bent carmel slag glass miller bradley

Antique Art Crafts Deco Bent Carmel Slag Glass Miller Bradley Hubbard ...

Phil taylor antiques ottumwa ia

Phil Taylor Antiques – Ottumwa,IA

Slag glass lamp 6 panel floral design

Slag Glass Lamp 6 Panel Floral Design

Antique art nouveau bent slag glass lamp shade hanging floor

Antique Art Nouveau Bent Slag Glass Lamp Shade-Hanging /Floor Lamp for ...

An antique slag glass lamp and shade bronze tone cast

An antique slag glass lamp and shade~Bronze tone cast metal base~Slag glass lamp shade with an Art Nouveau motif to the pierced patterns

Vintage mid century large tulip shaped hanging green slag glass

... Vintage Mid-Century Large Tulip Shaped Hanging Green Slag Glass Lamp

Antique slag glass lamps 15

The Tiffany-style slag glass lamp offers quality in itself - in this case, stained-glass windows have been enriched with marbled amber with its warm color and pink glass decorated with cabochons. An elegant visiting card of old times, based on a resinous base.

118 antique slag glass lamp


Blue slag glass lamp 1

Blue slag glass lamp;