Persian rose plate 8 inch

Bone china

Bone china is a kind of porcelain body originally produced in Britain in which calcined ox bone, bone ash, is a critical constituent. It is characterised by supreme whiteness, strength and translucency. persian rose plate 8 inch may be an example of this process.

The initial use of bone ash in ceramics is attributed 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 carried on with further developments, and duly made it popular, by mixing it with kaolin, China stone and china clay to compete with the imported Oriental porcelain.

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

The manufacture of bone china customarily uses a 2 stage firing where the first "biscuit" is fired without a glaze at 1280