The A.H. Heisey Company was formed in Newark, Ohio in 1895 by A. H. Heisey. The factory provided fine quality glass tableware and decorative glass figurines. Both pressed and blown glassware were made in a wide variety of patterns and colours.
Heisey glassware is readily identifiable as being of high clarity and brilliance, and highly finished through the process of firepolishing, with polished bottoms. Many of the pressed pieces appear to be cut-crystal on casual inspection due to the high-quality of the glass and the crispness of the molding. The majority, but no where near all of the pieces are impressed with the company logo a raised capital letter "H" inscribed in a diamond of approximately 1/4 inch (6 mm) in length. This mark is found on the bottom of most large pieces and on the base or stem of drinking glasses and comports.
Popular pattern names include Crystolite, Rose, Greek-key, Empress, Orchid, Plantation, Ridgeleigh, Stanhope, Old Sandwich and Yeoman amongst dozens of others.
Heisey is believed to have made a few pieces in milk-glass in its early production years and likely produced vaseline glass as well in the early twenties although not in large quantities.