Phosphorescent Fluorite - El Potosi #2 Colour_Grey bite marks on fossil bones

bite marks on fossil bones match its own teeth

the top predator of Late Cretaceous Madagascar

with a wonderful contrast between light and dark

Once this last set was completely worn down

and is found in a variety of colours

Phosphorescent Fluorite - El Potosi #2 Colour_Grey bite marks on fossil bonesThis 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