Photochromic Sodalite aka Hackmanite Specimen, Fluorescent and Tenebrescent, Color Changes to Darker scalenohedral calcite Most of the crystals are

Most of the crystals are double terminated and have fluorescent inclusions

Size: 60 x 38 x 28 mm

365nm long no wave UV light to see the inclusions

Fluorescent and phosphorescent (there is a glow that remains briefly after the UV light is removed) with long wave

Photochromic Sodalite aka Hackmanite Specimen, Fluorescent and Tenebrescent, Color Changes to Darker scalenohedral calcite Most of the crystals areYou will receive ONE (1) hackmanite specimen with marble and some may have richterite, from the Kokcha Valley, Kuran Wa Munjan, Badakshan Afghanistan. The specimens have mild tenebrescence. It is fluorescent (glows bright orange under longwave UV light), photochromic tenebrescent (changes to a deeper shade when exposed to sunlight or certain other light sources). You can see the tenebrescence (lighter and darker shades of purple) in the photos. When