ruby glass

noun

1. glass having a red color resulting from the addition of gold, copper, or selenium to the batch.
2. any glass of a dark red color.

ruby glass

noun

1. glass that has a deep rich red colour produced from oxides of various minerals, such as lead, copper, and iron

Word History and Origins

Origin of ruby glass¹

First recorded in 1790–1800

Example Sentences

From an inner pocket he drew out a tiny flask of ruby glass and snapped its stopper loose.

From Project Gutenberg

In the year 1606, when Libavius published his Alchemy, the art of making ruby-glass must have been unknown.

From Project Gutenberg

This red may be developed by reheating as in the case of making gold ruby glass.

From Project Gutenberg

Glass containing gold behaves in almost precisely the same way, but the ruby glass is less crimson than copper ruby glass.

From Project Gutenberg

It is like exposing a plate in a dark room behind the ruby glass.

From Project Gutenberg