Phosphorescent Fluorite - El Potosi #8 Rare Crystals_Opal including Brazil and Uruguay

including Brazil and Uruguay

and finally reds are the deepest layer

with many ancient civilisations using it for jewellery

This rare Opalised Bivalve shell is from Lightning Ridge

Phosphorescent Fluorite - El Potosi #8 Rare Crystals_Opal including Brazil and UruguayThis 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