Bone china is a type of ceramic material that is composed of bone ash, feldspathic material, and kaolin. It is a luxurious and precious material that is most commonly used for the creation of tableware and teaware such as plates, bowls, mugs, and teapots. Fine bone china is a type of high-quality ceramic material that is thinner and lighter in weight than porcelain. It also has warmer hues, whereas porcelain tends to be brighter. The quality of bone china is determined by the total amount of bone ash included in the raw materials. High-quality fine bone china contains at least 30% bone ash, enabling thin-walled pieces to be made with a more delicate appearance and translucency compared to porcelain, and allowing for greater chip resistance and durability.

In summary, bone china is a type of ceramic material that is composed of bone ash, feldspathic material, and kaolin, while fine bone china is a type of high-quality ceramic material that contains at least 30% bone ash and is thinner and lighter in weight than porcelain.