Blown three-mold glass in imitation of cut glass was made at American glassworks in different parts of the country from 1820 to 1830. Blown three-mold glass is made in full-sized hinged metal molds in several sections. One way to distinguish blown three-mold glass is to locate the mold marks. Blown three-mold glass was made of both bottle glass and flint glass in a combination of the mold and hand-manipulation methods. Many pieces such as pitchers are blown into the mold for shape and pattern, but their handles and rims are finished by hand. Blown three-mold glass is divided into three types according to its design. Designs with fluting, ribbing, diamonds, or sunburst are classed as Geometric. High-relief designs of scrolls, hearts, and palmettes are called Baroque, while patterns with Gothic or Roman arch are called Arch. Geometric designs are found on decanters of various sizes, toilet bottles, salts, flip glasses, goblets, cruets, pitchers, inkwells, hats, and other articles. The rare early square decanters blown in two-piece quart- and pint-size molds are found only with wide diamond diaper bands together with vertical fluting. The stoppers are blown mushroom type or pressed wheel shape. Decanters were usually blown of clear flint glass, but some are of aquamarine, olive-green, or amber bottle glass. They usually had one or more applied collars, and stoppers were of molded mushroom type or pressed wheel shape. Pitchers, salt cellars, and perfume bottles were made in a wide variety of colors, patterns, and sizes. The bestknown articles in Baroque patterns are pitchers and decanters. The patterns include Shell and Ribbing, Shell with Diamond, Star, Heart and Chain, Horn of Plenty, and Horizontal Palm Leaf. Arch patterns include Arch and Fern with Snake, and Gothic and Roman Arches, alone or together with sprays of leaves. Some of these patterns were made at Sandwich. Blown three-mold glass was made in New England, New York, Virginia, and at several glassworks in Ohio. Ohio pitchers, bowls, and decanters were usually blown in greens and ambers, but some clear three-mold Ohio glass is found. Blown three-mold glass has the mark of the individual workman and the charm and irregularities of early glass.