
Halite Salton Sea, California |

Halite Salton Sea, California (shortwave UV) |

Blue fluorite on quartz crystals Pasta Bueno, Peru |

Blue fluorite on quartz crystals Pasta Bueno, Peru (longwave UV) |

Fluorite, galena Rogerley Mine, Frosterley, County Durham, England |

Fluorite, galena Rogerley Mine, Frosterley, County Durham, England (longwave UV) |

Fluorite Spain |

Fluorite Spain (longwave UV) |

Fluorite Transvaal, Africa |

Fluorite Transvaal, Africa (longwave UV) |

Fluorite Wm. Wise Mine, Cheshire Co., Westmoreland, New Hampshire |

Fluorite Wm. Wise Mine, Cheshire Co., Westmoreland, New Hampshire (longwave UV) |

Calcite var. manganocalcite Peru |

Calcite var. manganocalcite Peru (longwave UV) |

Opal Opal Butte, Morrow County, Oregon |

Opal Opal Butte, Morrow County, Oregon (shortwave UV) |

Scheelite, fluorite Xiang Hualin, Hunan Province, China |

Scheelite, fluorite Xiang Hualin, Hunan Province, China (midrange UV) |

Sodalite Mont Saint-Hilaire, Quebec, Canada |

Sodalite Mont Saint-Hilaire, Quebec, Canada (longwave UV) |