Wikipedia
Cranberry glass
Cranberry glass or 'Gold Ruby' glass is a red glass made by adding gold salts or colloidal gold to molten glass. Tin, in the form of stannous chloride, is sometimes added in tiny amounts as a reducing agent. The glass is used primarily in expensive decorations.
Usage examples of "cranberry glass".
Frankly, it crossed my mind to fling a cranberry glass vase at him, and then make a run for it.