Bone china is a type of soft-paste porcelain that is composed of bone ash, feldspathic 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. 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. Its high strength allows it to be produced in thinner cross-sections than other types of porcelain. See "Bone China". Wikipedia. Retrieved 2014-12-12. Ivory china, or ivory bone china, is ivory coloring added to "bone china." See "WHAT IS CHINA". Noritake China Official Website. Retrieved 2015-11-24.