Phosphorescent Fluorite - El Potosi #13 halloween unlike the white / brown

unlike the white / brown colour most commonly seen in other Shark Teeth fossils

and other such imitations become more prevalent on the web

or Axinite-Mg with Magnesium

we bought these directly from the miner in St Marie who pulled them out of the pocket in the ground over 30 years ago

Phosphorescent Fluorite - El Potosi #13 halloween unlike the white / brownThis very new find Fluorite from December 2025 comes from the El Potosi Mine in Mexico. It has an unusual shape for Fluorite, and the current theory is that these may in fact be pseudomorphs after Calcite. They display not only fluorescence in longwave 365nm light, but also phosphorescence, which depending on the piece, can last several seconds after the UV light is turned off (this is best viewed in complete darkness). You will receive the exact