The Kaolin Mountain (高嶺山), which is very close to Jingdezhen (where our pieces are produced), is the source of Kaolin clay and the world's first porcelain. The vast majority of Spin's pieces are made with Kaolin which the main component in Jingdezhen high-fire porcelain.
Bone china, a close cousin of porcelain, is also used for a number of collections including plates but also vases as well as smaller items. Bone china derives its name from its ingredients: a combination of bone ash (derived from animal bones), kaolin as well as feldspar.
The Zisha clay that we use to make our teapots is very rare and is only found in Yixing, China. It is typically a rich red or brown, but can also be other various earth tones. This particular clay is typically unglazed because it is very fine and slightly porous, this allows the flavors of the tea to be absorbed into the pot itself, and so with use the flavor of the tea will change and evolve. The tea that is usually used for these teapots is called Pu-er tea, a very strong and highly caffeinated Chinese tea. Zisha tableware has a long history, it dates back to the Song Dynasty (960-1279) when the clay was first mined.