Milldale plate 9 inch

Bone china

Bone china is a type of porcelain body initially used in Britain in which calcined ox bone, bone ash, is a critical ingredient. It is differentiated by supreme whiteness, translucency and strength. milldale plate 9 inch may be an example of this procedure.

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

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

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