geologyin.com

yVAjX TIL Painite, the rarest gem in the world, only has two dozen specimens ever found.
vPE48 TIL: Pieces of Africa are embedded in the southeastern United States
Egn5W TIL that before trees took over the earth the land was covered with Prototaxites, a fungus that became extinct more than 350 million years ago and is believed to have reached almost 9m high and 1.37m in diameter.