On-glaze decoration

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On-glaze is a method of decorating ceramic articles, where the decoration is applied after it has been glazed. When the ware is fired, or re-fired in the case of twice fired ware, the colours fuse into the glaze and so the decoration becoming durable. Because the decorating fire can be at a lower temperature with on-glaze decoration a more varied palette of colours is available than with underglaze decoration.