Aberrant Fossil is a sort of currency presented in the Delve League of Path of Exile game. Fossil can be socked into Resonator to change the item crafting mod. Poe Aberrant fossil multiplies the weights of mods with chaos tags by 10 and poison tags by 5. A player has several opportunities to get it. They can have it dropped from Azurite Mine, buy the currency from Niko the Mad, and exchange it for the price of a Chromatic Orb with other gamers. One can also purchase Aberrant Fossil here.