Floradora green plate 10 5 8 inch

Bone china

Bone china is a type of porcelain body first used in Great Britain in which calcined ox bone, bone ash, is an essential ingredient. It is distinguish by extreme whiteness, translucency and strength. floradora green plate 10 5/8 inch may be an example of this process.

The first use of bone ash in ceramics is attributed to Thomas Frye in the mid eighteenth century 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 made it popular, by combining it with china clay, China stone and kaolin to compete against the imported Oriental porcelain.

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

The production of bone china usually employs a two stage firing process where the initial "biscuit" is fired without a glaze at 1280