Darjeeling rim soup 9 inch

Bone china

Bone china is a type of porcelain body first developed in the UK in which calcined ox bone, bone ash, is an important ingredient. It is characterised by high whiteness, strength and translucency. darjeeling rim soup 9 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 make a kind of soft-paste porcelain. In In the late 18th century, Josiah Spode undertook further developments, and subsequently made it popular, by combining it with china clay, kaolin and China stone to compete against the imported Oriental porcelain.

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

Bone china production consistently uses a two stage firing process where the initial "biscuit" is fired without a glaze at 1280