[Jewelry making - Article 00420] - Re: [Orchid] Diamond's Structural Secrets Revealed

[Al Balmer]

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>     The type of symmetry and ordered packing displayed by diamond is
>     not peculiar to diamond at all, and is shared by a few other
>     minerals. To be fair, Mr. Sunada appears to be a mathematician, not
>     a mineralogist or crystallographer, but..... 

    As often happens in popular interpretations of scientific work, the
    reporter said things that Dr. Sunada did not. What he said is that
    there are only two crystal structures which have both maximal
    symmetry and the "strong isotropic" property. He said that diamond is
    an example of this crystal structure, but afaict did not say it was
    the only such material.
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