Forest glass - replicas of green glass
Forest glass refers to glass characterized by its distinctive greenish tint and tiny bubbles. It is a product of traditional craftsmanship, where these bubbles and slight irregularities lend the glass its unique antique charm. Replicas of historical forest glass are defined by characteristic marks on the bottom (pontil marks) and various decorative elements such as prunts (raspberries), pinched trails, or pulled drops. These features were not merely decorative. They served a practical purpose. In the era when forest glass was most prevalent, people primarily ate with their hands, and the textured surface ensured a secure grip even with greasy fingers.
In the history of Bohemian glassmaking, the production of forest glass reached its peak of fame during the 14th and 15th centuries, remaining common until the early 18th century. Historical records also document the production of cobalt blue glass in Bohemia, utilizing cobalt that was a byproduct of local silver mining. Initially, blue glass served only as a decorative accent on green vessels; independent production of blue glassware was not fully established in the region until the mid-16th century. Later, influenced by Venetian glassworks, the production of red glass was introduced, which similarly began as a decorative element for clear glass.
The name 'Forest Glass' (or Waldglas) originates from the glassworks being established deep within forests, where there was an abundance of raw materials and, crucially, wood to fuel the furnaces. Its characteristic greenish tint is caused by iron oxide naturally present in the glass sand. These forest glassworks primarily produced glass with a greenish hue, containing bubbles and impurities—a result of minimal raw material purification and the imperfect melting process of the era.