Turgite over Quartz - Spain #5 Location_India Although the technical term would

Although the technical term would be ironstone concretion

This sweet specimen is a cluster of clear Topaz crystals

Pikes Peak in Colorado and Greenland

It is extremely unusual in that it will appear green-blue in natural daylight

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Turgite over Quartz - Spain #5 Location_India Although the technical term wouldThis iridescent Turgite coating over Quartz specimen is from the San Valentin Mine in Spain. You will receive the exact Turgite specimen shown in the pictures. Turgite is a trade name used nowadays to refer to Iridescent varieties of iron oxide minerals, most commonly Goethite or Hematite, that often coat other minerals such as Quartz. As it isn't a single, defined thing, it isn't classified as a mineral, and it's usage had changed over the years,