20-21 mm porcelain buttons very red blue The buttons were fired one

The buttons were fired one time at 1230c degrees

One might be white porcelain

buttons are fired for the second time at about 1210C degrees

Product photo shows sample buttons from this series

the color varies from  blue to green

20-21 mm porcelain buttons very red blue The buttons were fired onePorcelain buttons very red. These are about 20 21 mm and sold in different sets. 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 1230C degrees. The backside of the buttons stays unglazed. Its like a stone to the touch. Can