6 pcs. 23mm ceramic buttons satin oribe button Please be aware that due

Please be aware that due to the square shape these buttons look bigger then round buttons in 17-18mm

These buttons are about 17mm and sold in different sets

Porcelain buttons malachite

Photo shows a sample set from this series

These are about 18mm and sold in a set of 9

6 pcs. 23mm ceramic buttons satin oribe button Please be aware that dueHandmade ceramic buttons satin oribe. These are 23 mm buttons sold in set of 6. 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 3 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 in a washing