Definition of spinel ruby in English:

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spinel ruby

noun

A deep red variety of spinel, often of gem quality.
Example sentences
  • In ancient times spinel rubies and corundum rubies were equally well known, and the two were probably often confounded.
  • We visit the mining fields, where sapphires, topazes and spinel rubies are found.
  • As a rule the true ruby is blood-red, sometimes called ‘pigeon blood’; the spinel ruby is scarlet; and the minor variety, the ballas ruby, is rose-red.
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