A wine glass, circa 1720.

The glass (one of four), has a  drawn trumpet bowl and is on an airtwist stem. In the early 18th Century, English glassblowers extended the idea of a ‘teardrop’ in the stem of a glass, for decorative purposes, to create complex patterns throughout the length of the stem, in what became known as the airtwist stem. Once a blob of molten glass was attached to the bowl, it was pierced by nails and as the stem was drawn out and twisted, the pattern was formed and could be varied by changing the number, size and shape of the nails. The natural refractive quality of lead crystal was greatly enhanced by this process.



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