Underglaze decorations are mineral colors applied to the clay surface before the main firing and then a clear glaze is applied over them. It fully bonds to the piece in the kiln, but only a few colors are possible because the raw materials must withstand the heat. Overglaze colors, or enamels, are produced when decorators paint on top of the glaze after the work has been fired. They fuse to the glazed surface in an additional firing at a much lower temperature. They allow a much brighter palette, but they do not have the durability of underglaze.
{"Image DocumentName": "Underglaze decorations are mineral colors applied to the clay surface before the main firing and then a clear glaze is applied over them. It fully bonds to the piece in the kiln, but only a few colors are possible because the raw materials must withstand the heat. Overglaze colors, or enamels, are produced when decorators paint on top of the glaze after the work has been fired. They fuse to the glazed surface in an additional firing at a much lower temperature. They allow a much brighter palette, but they do not have the durability of underglaze.", "Image ImageDescription": "Dish with Lobed Rim, Qing Dynasty, 1700.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}