Royal doulton daisy duck

Bone china

Bone china is a type of porcelain body initially developed in the UK in which calcined ox bone, bone ash, is a major part. It is differentiated by brilliant whiteness, strength and translucency. royal doulton daisy duck may be an example of this procedure.

The first use of bone ash in ceramics is associated with Thomas Frye in 1748 in which he used it to develop a kind of soft-paste porcelain. In At the close of the eighteenth century, Josiah Spode carried on with further developments, and consequently popularised it, by combining it with kaolin, China stone and china clay to compete against 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 is still the standard English body.

Bone china production commonly uses a 2 stage firing where the initial "biscuit" is fired without a glaze at 1280