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A clear, deep, red variety of corundum, valued as a precious stone. / (obsolete) A red spinel. / A deep red colour. / (heraldry) The tincture red or gules.

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ruby

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ruby

/ˈɹuː.bi/

noun

A clear, deep, red variety of corundum, valued as a precious stone. / (obsolete) A red spinel. / A deep red colour. / (heraldry) The tincture red or gules.

I love wearing my ruby necklace.

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A clear, deep, red variety of corundum, valued as a precious stone.

Although there are dozens of different types of gems, among the best known and most important are diamond, ruby and sapphire, emerald and other gem forms of the mineral beryl, chrysoberyl, tanzanite, tsavorite, topaz and jade.

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