Haworth plate 8 inch

Bone china

Bone china is a kind of porcelain body first developed in Great Britain in which calcined ox bone, bone ash, is an essential ingredient. It is differentiated by supreme whiteness, strength and translucency. haworth plate 8 inch may be an example of this process.

The first use of bone ash in ceramics is assigned to Thomas Frye in seventeen-forty-eight in which he used it to develop a type of soft-paste porcelain. In Towards the end of the 18th century, Josiah Spode undertook further developments, and subsequently popularised it, by combining it with china clay, China stone and kaolin to compete with the imported Oriental porcelain.

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

Bone china production commonly makes use of a two stage firing where the initial "biscuit" is fired without a glaze at 1280