Colloquially the terms "porcelain doll", "bisque doll" and "china doll" are sometimes used interchangeably. But collectors make a distinction between china dolls, made of glazed porcelain, and bisque dolls, made of unglazed bisque or biscuit porcelain. A typical antique china doll has a white glazed porcelain head with painted molded hair and a body made of cloth or leather. The name comes from "china" being used to refer to the material porcelain. They were mass-produced in Germany, peaking in popularity between 1840 and 1890 and selling in the millions. Parian dolls were also made in Germany, from around 1860 to 1880. They are made of white porcelain similar to china dolls but the head is not dipped in glaze and has a matte finish. Bisque dolls are characterized by their realistic, skin-like matte finish. They had their peak of popularity between 1860 and 1900 with French and German dolls. Antique German and French bisque dolls from the 19th century were often made as children's playthings, but contemporary bisque dolls are predominantly made directly for the collectors market.