20th Century Glass

Slag Glass / Malachite Glass Identification Guide + Gallery

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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. Many of the same designs for milk glass were also produced in slag glass. Slag glass was made by British companies Sowerby, Davidson and Greener during the Victorian era, around the 1880's/90's, and was also produced in other European countries, most notably France. Sowerby marketed their slag glass under the name 'Malachite', and this name was used for all the colours they produced, even though technically it should only apply to green, as the name comes from the marbled green mineral 'malachite'. By far the most common colour for slag glass was purple, but it was also made in blue, turquoise, green, and brown glass. Modern slag glass is still being made today in USA, and comes in a variety of colours.

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PLEASE NOTE: Most of the items shown in these sections are from our past sales, and are no longer available.
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Davidson Victorian purple malachite / slag glass vase, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass vase, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass vase, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass vase, with lion manufacturing mark on base.
Davidson Victorian purple malachite / slag glass vase, with lion manufacturing mark on base.

Davidson Victorian purple malachite / slag glass comport bowl, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass comport bowl, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass comport bowl, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass comport bowl, with lion manufacturing mark on base.
Davidson Victorian purple malachite / slag glass comport bowl, with lion manufacturing mark on base.

Victorian purple malachite / slag glass trinket / pin dish, unmarked. Victorian purple malachite / slag glass trinket / pin dish, unmarked. Victorian purple malachite / slag glass trinket / pin dish, unmarked. Victorian purple malachite / slag glass trinket / pin dish, unmarked.
Victorian purple malachite / slag glass trinket / pin dish, unmarked.

Victorian blue malachite / slag glass obelisk, unmarked. Victorian blue malachite / slag glass obelisk, unmarked. Sowerby Victorian blue malachite / slag glass vase or toothpick holder, with peacock manufacturing mark on inside base. Pattern number 1223. Sowerby Victorian blue malachite / slag glass vase or toothpick holder, with peacock manufacturing mark on inside base. Pattern number 1223.
Victorian blue malachite / slag glass obelisk, unmarked. Sowerby Victorian blue malachite / slag glass vase or toothpick holder, with peacock manufacturing mark on inside base. Pattern number 1223.

Sowerby Victorian blue malachite / slag glass vase or toothpick holder. Pattern number 1223. Sowerby Victorian purple malachite / slag glass vase or toothpick holder. Pattern number 1223. Sowerby Victorian purple malachite / slag glass vase or toothpick holder. Pattern number 1223. Victorian turquoise green malachite / slag glass vase or toothpick holder, unmarked.
Sowerby Victorian blue malachite / slag glass vase or toothpick holder. Pattern number 1223. Sowerby Victorian purple malachite / slag glass vase or toothpick holder. Pattern number 1223. Victorian turquoise green malachite / slag glass vase or toothpick holder, unmarked.

Victorian blue malachite / slag glass bowl, unmarked. Victorian purple malachite / slag glass bowl, unmarked. Victorian turquoise green malachite / slag glass bowl, unmarked. Victorian blue malachite / slag glass bowl, unmarked.
Victorian blue malachite / slag glass bowl, unmarked. Victorian purple malachite / slag glass bowl, unmarked. Victorian turquoise green malachite / slag glass bowl, unmarked. Victorian blue malachite / slag glass bowl, unmarked.

Victorian purple malachite / slag glass vase, unmarked. Victorian purple malachite / slag glass vase, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.
Victorian purple malachite / slag glass vase, unmarked. Victorian purple malachite / slag glass vase, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.

Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1154 1/2. Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1148 1/4. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.
Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1154 1/2. Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1148 1/4. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.

Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1367. Victorian blue malachite / slag glass bowl, unmarked. Davidson Victorian blue malachite / slag glass vase or toothpick holder, with lion manufacturing mark on inside base. Pattern number 166? Davidson Victorian blue malachite / slag glass vase or toothpick holder, with lion manufacturing mark on inside base. Pattern number 166?
Sowerby Victorian purple malachite / slag glass vase or toothpick holder, unmarked. Pattern number 1367. Victorian blue malachite / slag glass bowl, unmarked. Davidson Victorian blue malachite / slag glass vase or toothpick holder, with lion manufacturing mark on inside base. Pattern number 166?

Davidson Victorian blue malachite / slag glass cream jug. Pattern number 166? Victorian purple malachite / slag glass cream jug + sugar bowl, unmarked. Victorian purple malachite / slag glass cream jug, unmarked. Davidson Victorian purple malachite / slag glass cream jug. Pattern number 166?
Davidson Victorian blue malachite / slag glass cream jug. Pattern number 166? Victorian purple malachite / slag glass cream jug + sugar bowl, unmarked. Victorian purple malachite / slag glass cream jug, unmarked. Davidson Victorian purple malachite / slag glass cream jug. Pattern number 166?

Victorian purple malachite / slag glass cream jug, unmarked. Victorian purple malachite / slag glass cream jug + sugar bowl, unmarked. Victorian purple malachite / slag glass sugar bowl, unmarked. Victorian turquoise malachite / slag glass cream jug, unmarked.
Victorian purple malachite / slag glass cream jug + sugar bowl, unmarked. Victorian turquoise malachite / slag glass cream jug, unmarked.

Victorian blue malachite / slag glass cream jug, by Davidson, pattern 132, unmarked. Victorian blue malachite / slag glass cream jug, by Davidson, pattern 132, unmarked. Victorian blue malachite / slag glass cream jug, by Davidson, pattern 132, unmarked. Victorian blue malachite / slag glass cream jug, unmarked.
Victorian blue malachite / slag glass cream jug, by Davidson, pattern 132, unmarked.

Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Pattern number 1290 1/2. Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Pattern number 1290 1/2. Davidson Victorian turquoise malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian turquoise malachite / slag glass half pint tumbler, with lion manufacturing mark on base.
Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Pattern number 1290 1/2. Davidson Victorian turquoise malachite / slag glass half pint tumbler, with lion manufacturing mark on base.

Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Pattern number 46. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Pattern number 46.
Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Pattern number 46.

Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base.
Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base.

Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Victorian purple malachite / slag glass pedestal bowl, unmarked. Victorian purple malachite / slag glass pedestal bowl, unmarked.
Sowerby Victorian purple malachite / slag glass half pint tumbler, with peacock manufacturing mark on base. Victorian purple malachite / slag glass pedestal bowl, unmarked. Victorian purple malachite / slag glass pedestal bowl, unmarked.

Davidson Victorian blue malachite / slag glass pedestal bowl, with lion manufacturing mark on inside base, pattern number 228. Purple + white malachite / slag glass salt dishes, unmarked. Victorian purple malachite / slag glass top hat bowl / vase, unmarked.
Davidson Victorian blue malachite / slag glass pedestal bowl, with lion manufacturing mark on inside base, pattern number 228. Purple + white malachite / slag glass salt dishes, unmarked. Victorian purple malachite / slag glass top hat bowl / vase, unmarked.

Victorian purple malachite / slag glass tankard, unmarked. Victorian blue malachite / slag glass basket bowl, unmarked. Sowerby Victorian purple malachite / slag glass basket bowl, unmarked. Pattern number 1157 1/2. Victorian purple malachite / slag glass tankard, unmarked.
Victorian purple malachite / slag glass tankard, unmarked. Victorian blue malachite / slag glass basket bowl, unmarked. Sowerby Victorian purple malachite / slag glass basket bowl, unmarked. Pattern number 1157 1/2. Victorian purple malachite / slag glass tankard, unmarked.

Sowerby Victorian purple malachite / slag glass small tumbler or spill vase, with peacock manufacturing mark on base. Sowerby Victorian purple malachite / slag glass small tumbler or spill vase, with peacock manufacturing mark on base. Sowerby Victorian purple malachite / slag glass small tumbler or spill vase, with peacock manufacturing mark on base. Sowerby Victorian purple malachite / slag glass small tumbler or spill vase, with peacock manufacturing mark on base.
Sowerby Victorian purple malachite / slag glass small tumbler or spill vase, with peacock manufacturing mark on base.

Victorian purple malachite / slag glass goblet, unmarked. Victorian turquoise malachite / slag glass toothpick holder, unmarked. Victorian blue malachite / slag glass basket bowl, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.
Victorian purple malachite / slag glass goblet, unmarked. Victorian turquoise malachite / slag glass toothpick holder, unmarked. Victorian blue malachite / slag glass basket bowl, unmarked. Victorian purple malachite / slag glass vase or toothpick holder, unmarked.

Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Victorian turquoise malachite / slag glass vase, unmarked. Victorian turquoise malachite / slag glass vase, unmarked.
Davidson Victorian purple malachite / slag glass half pint tumbler, with lion manufacturing mark on base. Victorian turquoise malachite / slag glass vase, unmarked.

Victorian purple malachite / slag glass bowl, unmarked. Victorian purple malachite / slag glass bowl, unmarked.
Victorian purple malachite / slag glass bowl, unmarked.



        



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