Diamond Air Trap - (Glass)

TheAntiqueTrade.co.uk Glossary of Antique Terms D

Diamond Air Trap - (Glass) Decoration consisting of bubbles of air trapped in the glass in a diamond-shaped pattern. This is achieved by blowing a gather of glass into a mold with projections of the desired diamond design. The raised channel in the first layer of colored glass gives a piece its external pattern. A second layer of clear glass is gathered then blown in. This second layer bleeds through to the first, which traps pockets of air into the indentions giving satin glass its complex appearance. This technique was patented by W.H., B. & J. Richardson of England in 1857.

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