Silver stain on glass

Silver stain is a glassworking technique that produces yellow to orange areas using silver compounds and firing. Corning Museum of Glass describes the application of silver nitrate or related compounds to the glass surface before firing at a relatively low temperature.

The name refers to the colouring compound, not a shiny silver coating. Glasgow Museums explains that the stain reacts with the glass during heating. It therefore differs from paint that remains as a separate coloured layer. Yellow glass alone, however, does not prove that this technique was used.

The technique occurs in stained-glass panels and glass vessels. One documented Corning example is a wineglass with yellow silver-stained areas and engraved decoration. The museum dates the set to about 1860 to 1875 and describes its manufacturer attribution as probable. Another glass should not receive that date or maker merely because it has yellow decoration.

For assessment, record the coloured areas, engraving, shape and any signatures. Separate visible features from an uncertain identification of the technique. Also compare the terminology with cased glass, a different glassworking concept.

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