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Silver fumed vessels

Blown borosilicate glass which is then exposed to the fumes of burning pure silver (99 per cent minimum) while the glass is just below a red heat. A layer or silver is chemically bonded to the glass creating a partial mirror, which can then be manipulated to some extent using the composition of the flame: an oxygen-rich flame for blues, golds and yellows, or a gas-rich 'reducing' flame for silver, purple, red. It's and elusive process not an exact science, and never repeatable. Each piece is unique.