Yorkshire rose plate 8 inch

Bone china

Bone china is a type of porcelain body originally developed in Great Britain in which calcined ox bone, bone ash, is an important part. It is characterised by extreme whiteness, translucency and strength. yorkshire rose plate 8 inch may be an example of this procedure.

The first use of bone ash in ceramics is assigned to Thomas Frye in in the late 1740s in which he used it to introduce a kind of soft-paste porcelain. In Towards the end of the 18th century, Josiah Spode continued with further developments, and subsequently made it popular, by combining it with China stone, china clay and kaolin 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 is still the standard English body.

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