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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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of ruby glass1

First recorded in 1790–1800
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Example Sentences

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

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

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

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

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

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