17-19mm ceramic buttons mix blue reykjavik They are 22-23mm big and

They are 22-23mm big and sold in set of 6

First firing is the so called bisque firing where temperature goes as high as 1000C degrees

Please be aware that due to the square shape these buttons optically look same as round 17-18mm because they measure 18-19mm in the diagonal

These are about 20mm buttons sold in set of 5 buttons

17-19mm ceramic buttons mix blue reykjavik They are 22-23mm big andMixed sets of blue ceramic buttons about 17 19mm each. As this is a mixed set, buttons within one set may be out of different clays, so the backsides are of different colors. One might be white porcelain, the other one black or yellow clay etc. They are also different in depth, the difference always being within 1 mm. The price per set is different and depends on the amount of buttons and difficulty of the creation process. All variants are marked on