terryyip
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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[1]. Developed by English potter Josiah Spode, bone china is known for its high levels of whiteness and translucency[2], and very high mechanical strength and chip resistance[3]. (Wikipedia)
Crown china has a special mark, depending on what kind of crown china it is. Prince Albert is one example (Bob/PKB)
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