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1 definition found
 for ruby sulphur
From The Collaborative International Dictionary of English v.0.48 :

  Ruby \Ru"by\, n.; pl. Rubies. [F. rubis (cf. Pr. robi), LL.
     rubinus, robinus, fr. L. rubeus red, reddish, akin to ruber.
     See Rouge, red.]
     1. (Min.) A precious stone of a carmine red color, sometimes
        verging to violet, or intermediate between carmine and
        hyacinth red. It is a red crystallized variety of
        corundum.
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     Note: Besides the true or Oriental ruby above defined, there
           are the balas ruby, or ruby spinel, a red variety of
           spinel, and the rock ruby, a red variety of garnet.
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                 Of rubies, sapphires, and pearles white.
                                                    --Chaucer.
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     2. The color of a ruby; carmine red; a red tint.
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              The natural ruby of your cheeks.      --Shak.
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     3. That which has the color of the ruby, as red wine. Hence,
        a red blain or carbuncle.
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     4. (Print.) See Agate, n., 2. [Eng.]
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     5. (Zool.) Any species of South American humming birds of the
        genus Clytolaema. The males have a ruby-colored throat
        or breast.
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     Ruby of arsenic, Ruby of sulphur (Chem.), a glassy
        substance of a red color and a variable composition, but
        always consisting chiefly of the disulphide of arsenic; --
        called also ruby sulphur.
  
     Ruby of zinc (Min.), zinc sulphide; the mineral zinc blende
        or sphalerite.
  
     Ruby silver (Min.), red silver. See under Red.
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