Enamel ware is made from an old process of coating metal with porcelain, which became popular in the 1800s. By the late 1870s, a new form of enamel ware was developed, called "granite ware." Granite ware was designed with decorative patterns resembling granite, ranging from mottled, speckled, spatters or swirls. Early granite ware was turquoise blue with white or green. Both enamel and granite ware were used in the production of early kitchen utility ware.