Inner Mongolian quartz long point pair Prehnite UV reactivity The calcite fluoresces

UV reactivity The calcite fluoresces a weak white under 365nm UV light

or near a window indoors

most pieces glowing a strong green under 365nm UV light

they are pretty convincing as coprolites

Approx dimensions: 1

Inner Mongolian quartz long point pair Prehnite UV reactivity The calcite fluorescesLocale: HuangGangLiang mining district, Inner Mongolia, China Approx point length: 3. 75" Approx weight: 40g These quartz points are from HuangGangLiang, and commonly called Mongolian or Inner Mongolian quartz. This isn't your typically shiny quartz; this pair of long straight points is completely coated in a dull mineral crust. On one side, the piece displays two elegant sleek long quartz crystals. Broken ends reveal the first generation of growth