Lobi crystal
From Memory Alpha, the free Star Trek reference
In 2371, on Deep Space 9, Quark attempted to sell Harry Kim one of the crystals at an inflated price claiming to have acquired them from a strange creature called the Morn, but Tom Paris warned Harry that a dozen of those crystals could be bought at the Volnar Colony, for only one Cardassian lek. (VOY: "Caretaker")
