Define Graal glass.

Graal glass is a decorative glassware technique that originated in the late 19th century. It involves creating intricate and colorful designs within a glass object by layering different colored glass and then carefully manipulating and shaping it through a series of reheating and blowing processes. The term 'Graal' is derived from the Swedish word meaning 'grail' or 'vessel', which reflects the skill required to create these exquisite glass objects. To make Graal glass, the glassmaker starts by blowing a layer of transparent glass into a mold. Once cooled, the artist adds layers of colored glass on top, using various techniques such as cutting, engraving, or sandblasting to create intricate patterns. The piece is then reheated and carefully shaped, further adding layers of colored glass if desired. The final result is a multi-layered glass object with stunning designs and a sense of depth and dimension. Graal glass is highly regarded for its technical complexity and artistic beauty. It requires exceptional skill and precision to create these unique pieces, making each one a true work of art. Today, Graal glass continues to be practiced by skilled glass artists around the world, carrying on the tradition of this exquisite glassmaking technique.