Florentine black and gold rimmed soup bowl 8 inch

Bone china

Bone china is a type of porcelain body first used in the United Kingdom in which calcined ox bone, bone ash, is an important ingredient. It is distinguish by extreme whiteness, translucency and strength. florentine black and gold rimmed soup bowl 8 inch may be an example of this process.

The first use of bone ash in ceramics is credited to Thomas Frye in the mid eighteenth century in which he used it to develop a kind of soft-paste porcelain. In At the close of the eighteenth century, Josiah Spode carried on with further developments, and consequently made it popular, by combining it with china clay, China stone and kaolin to compete against the imported Oriental porcelain.

The initial elemental recipe of three and a half parts china clay, six parts bone ash, and four parts china stone is still the standard English body.

The manufacture of bone china ordinarily employs a two stage firing process where the initial "biscuit" is fired without a glaze at 1280