8 pcs 20 mm ceramic buttons copper patina indigoblau Black porcelain buttons in dark

Black porcelain buttons in dark lilac

These are square buttons about 18x18mm sold in set of 6

Photo shows a sample set from this series

Porcelain buttons bright yellow

These are 17-18 mm buttons sold in sets of 11

8 pcs 20 mm ceramic buttons copper patina indigoblau Black porcelain buttons in darkHandmade ceramic buttons with copper patina effect. They are 20mm big and sold in set of 8. The buttons were fired two times. First firing is the so called bisque firing where temperature goes as high as 1000C degrees. After that our buttons are ready to be glazed. We put 2 layers of glaze manually and when they've dried, buttons are fired for the second time at about 1210C degrees. The backside of the buttons stays unglazed. Can you wash the buttons