Nebulite

Nebulite is a group of super-rare metallic minerals born inside nebulae in space. They consist of multiple rare metals, including bismuth, osmium, promethium, neodymium and tantalum among many others.

Only seven samples of Nebulite have ever fallen from space into the Elven Realm, each of them as part of a meteorite. The average chemical composition of these samples is Bi8Os6PmNd3U3, making it the most chemically diverse mineral ever discovered in the Elven Realm.