Lady carlyle beaker

Bone china

Bone china is a kind of porcelain body initially used in England in which calcined ox bone, bone ash, is a major part. It is distinguish by supreme whiteness, translucency and strength. lady carlyle beaker may be an example of this procedure.

The initial use of bone ash in ceramics is associated with Thomas Frye in 1748 in which he used it to develop a type of soft-paste porcelain. In At the close of the 18th century, Josiah Spode undertook further developments, and duly popularized it, by combining it with kaolin, China stone and china clay to compete with the imported Oriental porcelain.

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

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