Malachite / Slag 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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Sowerby Malachite / Slag Glass
A Victorian purple and white British pressed malachite / slag glass spill vase. Made by Sowerby, pattern number 1148.
A Victorian purple and white British pressed malachite / slag glass spill vase. Made by Sowerby, pattern number 1154½.
A Victorian purple and white British pressed malachite / slag glass basket shaped bowl. Made by Sowerby, pattern number 1192½, marked.
A Victorian purple and white British pressed malachite / slag glass spill vase. Made by Sowerby, pattern number 1223.
A Victorian turquoise and white British pressed malachite / slag glass bowl / trough. Made by Sowerby, pattern number 1231, marked.
A Victorian purple and white British pressed malachite / slag glass spill vase. Made by Sowerby, pattern number 1258, marked.
A Victorian green and white British pressed malachite / slag glass bowl / pin dish. Made by Sowerby, pattern number 1259, marked.
A Victorian purple and white British pressed malachite / slag glass basket shaped spill vase. Made by Sowerby, pattern number 1288, marked.
A Victorian purple and white British pressed malachite / slag glass bowl. Made by Sowerby, pattern number 1299, marked.
A Victorian purple and white British pressed malachite / slag glass cup. Made by Sowerby, pattern number 1400, marked.
A Victorian purple and white British pressed malachite / slag glass half pint tumbler. Made by Sowerby, marked.
A Victorian purple and white British pressed malachite / slag glass tumbler. Made by Sowerby, marked.
Davidson Malachite / Slag Glass
A Victorian purple and white British pressed malachite / slag glass bowl. Made by Davidson, pattern number 234.
A Victorian purple and white British pressed malachite / slag glass bowl. Made by Davidson, marked.
A Victorian purple and white British pressed malachite / slag glass half pint tumbler. Made by Davidson, marked.
A Victorian purple and white British pressed malachite / slag glass tumbler. Made by Davidson, marked.
A Victorian purple and white British pressed malachite / slag glass vase. Made by Davidson, marked.
A Victorian purple and white British pressed malachite / slag glass "Just a Thimble Full" shot glass. Made by Davidson.
A Victorian blue and white British pressed malachite / slag glass creamer / jug. Made by Davidson.
A Victorian blue and white British pressed malachite / slag glass spill vase. Made by Davidson, marked.
A Victorian blue and white British pressed malachite / slag glass half pint tumbler. Made by Davidson, marked.
A Victorian blue and white British pressed malachite / slag glass bowl. Made by Davidson, marked.
A Victorian purple and white British pressed malachite / slag glass creamer / jug. Made by Davidson, pattern number 121.
Other Malachite / Slag Glass
A Victorian style mid century turquoise and white pressed malachite / slag glass spill vase. Made by Imperial Glass, marked.
A Victorian blue and white British pressed malachite / slag glass bowl or spill vase. Manufacturer unknown.
A Victorian turquoise and white British pressed malachite / slag glass bowl or spill vase. Manufacturer unknown.
A Victorian blue and white British pressed malachite / slag glass bowl. Manufacturer unknown.
A Victorian blue and white British pressed malachite / slag glass basket shaped bowl. Manufacturer unknown.
A Victorian blue and white British pressed malachite / slag glass basket shaped bowl. Manufacturer unknown.
A Victorian blue and white British pressed malachite / slag glass basket shaped bowl. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass footed bowl. Manufacturer unknown.
A Victorian turquoise and white British pressed malachite / slag glass vase. Manufacturer unknown.
A Victorian turquoise and white British pressed malachite / slag glass vase. Manufacturer unknown.
A pair of Victorian purple and white British pressed malachite / slag glass spill vases. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass vase. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass vase. Made by John Derbyshire of England.
A Victorian purple and white British pressed malachite / slag glass bowl. Manufacturer unknown.
A Victorian turquoise and white British pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass pin dish. Manufacturer unknown.
A Victorian blue and white British pressed malachite / slag glass creamer jug. Manufacturer unknown.
A Victorian purple and white British pressed malachite / slag glass bowl in the form of a nautilus shell. Manufacturer unknown, similar to a design by W. H. Heppel & Co.
A Victorian purple and white pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian purple and white pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian blue and white pressed malachite / slag glass small tankard. Manufacturer unknown.
A Victorian purple and white pressed malachite / slag glass spill vase, with stork or heron bird design. Manufacturer unknown, possibly French factory Sars-Poteries.
A Victorian blue and white pressed malachite / slag glass spill vase. Manufacturer unknown.
A Victorian purple and white pressed malachite / slag glass posy vase or bowl. Manufacturer unknown.
A Victorian purple and white pressed malachite / slag glass spill vase. Manufacturer unknown for certain but very similar to Sowerby's pattern 1154.
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References
For more information on Malachite / Slag glass, check out the following resources:
Books
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Websites
www.victorianpressedglass.com - Large gallery of Sowerby and other Victorian pressed glass, with catalogue scans.
