You will need six colorless and transparent/clear glasses or plastic cups.

Items made of colorless glass and green bottle glass are most commonly seen.

Together with the related barium and zinc selenites, sodium selenite is mainly used in the manufacture of colorless glass.

During this time, the production of Steuben changed from various types of colored glass to colorless glass.

These works appeared in colorless and purple tinted glass.

With the addition of certain minerals a colorless glass is produced.

It seemed to be made of some metal, except for the large, staring eyes, which were of colorless glass.

Some of the original charm was lost, as the multi-colored clerestory windows around the center court had replaced by colorless glass.

He mixed colorless glass with opaque, introducing colorful threads and ribbons.

The most common types used for consumer containers are colorless glass, green glass, and brown/amber glass.