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Water Gilding is a mode of gilding by an amalgam in which the articles are piekled and then dipped in or brushed with a dilute solution of nitrate of mercury and gold, called quick water, which leaves a film of amalgam on the surface. After dipping, the articles are exposed to heat in a cage within a furnace, and the mercury is thus driven off. The gold surface is then polished with a bloodstone burnisher.