Prismatic Gneiss has a fracturized molecule-structure, which explains its unique appearance. It is the most sought after member of the Gneiss family, as it yields 10% more than common Gneiss.

Gneiss is a popular ore type because it holds significant volumes of three heavily used minerals, increasing its utility value. It has quite a bit of Mexallon as well as some Pyerite and Isogen.

This material is compressed and a much more compact form of the original material.