button jewlry materials  made from

made from ceramic which can be porcelin or soft caly

made from ceramic which can be porcelin or bone or china

made from ceramic which can be porcelin or hard paste

made from hard pasre which can be china (glazed ),, bisque (not glazed), parian (white porcelin)

big size button can be  simillar size to miniture doll or medium size of a charm jewelry