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August 1 eNews Mini-Quiz Question

This topic contains 2 replies, has 3 voices, and was last updated by Profile photo of dinkydragon dinkydragon 1 year, 1 month ago.

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  • #199127
    Profile photo of msalguero

    You have a purple gem. When you place it in the polariscope, it turns red but you still see occasional flashes of purple. However, you do not get a distinct light/dark reaction. It stays mostly dark except for areas of windowing. What kind of gem is this?

    Profile photo of wpond

    Is this gem tanzanite.

    Profile photo of dinkydragon

    Is it iolite?

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