Ironstone china is a type of pottery known for its durability and strength. It was first developed in the early 19th century in England as a more affordable alternative to fine porcelain. Made from a mixture of clay, feldspar, and other materials, ironstone china is often characterized by its white or cream color and can be decorated with various patterns. This type of china became popular for everyday use due to its resistance to chipping and cracking. Many manufacturers, such as Mason's and Johnson Brothers, produced ironstone china, which remains sought after by collectors today for its historical significance and unique designs.