Cathedral glass

The name draws from the fact that windows of stained glass were a feature of medieval European cathedrals from the 10th century onward.

Stained glass is the material and the art form of making coloured windows of elaborate or pictorial design.

Very early architectural glass, like that sometimes found in excavations of Roman baths, was cast.

For more distinct textures, the metal cylinder is imprinted with a pattern that is pressed into the molten glass as it passes through the rollers.

It lets in light while reducing visibility and is a less expensive but still decorative material.