Haversham plate 10 5 8 inch

Bone china

Bone china is a kind of porcelain body initially produced in Britain in which calcined ox bone, bone ash, is an essential constituent. It is characterized by high whiteness, translucency and strength. haversham plate 10 5/8 inch may be an example of this process.

The first use of bone ash in ceramics is associated with Thomas Frye in in the late 1740s in which he used it to develop a type of soft-paste porcelain. In At the close of the 18th century, Josiah Spode continued with further developments, and subsequently popularised it, by mixing it with kaolin, China stone and china clay to compete with the imported Oriental porcelain.

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

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