Stronger than any other ceramic, porcelain is very resistant. The paste is mainly made out of quartz, feldspar, and kaolin, which allows vitrification at a very high temperature. It gives porcelain its resistance, its whiteness and its transparency. My pieces are fired two times (1200 ° C minimum), which gives them their beautiful solidity. The glaze applied between the two fires provides a colored finish and additional resistance through its vitrification.