Bone china is a type of soft-paste porcelain that is composed of bone ash, Feld spathic material, and kaolin. It has been defined as ware with a translucent body containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phosphate. Discovered in the 1790’s by Thomas Frye and later developed by English potter Josiah Spode, bone china is known for its high levels of whiteness and translucency and very high mechanical strength and chip resistance.
