Sonnet tea cream

Bone china

Bone china is a type of porcelain body originally used in Britain in which calcined ox bone, bone ash, is a critical part. It is characterised by extreme whiteness, translucency and strength. sonnet tea cream may be an example of this procedure.

The first use of bone ash in ceramics is associated with Thomas Frye in in the late 1740s in which he used it to make a kind of soft-paste porcelain. In At the close of the 18th century, Josiah Spode carried on with further developments, and duly made it popular, by combining it with kaolin, China stone and china clay to compete with the imported Oriental porcelain.

The original elementary formula of four parts china stone, three and a half parts china clay, and six parts bone ash remains the standard English body.

The production of bone china mainly uses a 2 stage firing where the initial "biscuit" is fired without a glaze at 1280