Contraurium - An incredibly explosive crystalline element. Its explosions are incredibly hot, rather than concussive. Relatively rare.

Inmutatium - A crystalline element that is a near-perfect insulator for both heat and electricity. Relatively uncommon.

Multavinium - A crystal that is capable of making 6-way bonds under regular conditions. It is a magnetic material and more importantly a superconductor at regular temperatures. Usually found underground near the mantle of planets, but in these places the element is somewhat plentiful.

Magnystium - A metalloid that is hydrophobic. It is a rather soft metal, and is relatively rare.

Infragium - A metalloid element that is stronger than lonsdaleite, but a bit more heavy than steel. It is very bad at conducting heat and electricty. Unreactive and quite rare.

Obstructonium - A metalloid that reflects neutrons better than Beryllium, and blocks radiation incredibly well. Rare.

Aestusium - A metal that conducts heat even better than copper, but doesn't conduct electricity as well. Quite rare.

Prolotosium - A metal that conducts electricity even better than copper, but doesn't conduct heat as well. Quite rare.

Transvorium - An metal that can absorb incredibly large amounts of energy. Upon reaching a liquid state or reaching it's threshold of energy it can absorb, it releases all of this energy at once. Very rare.

Quarium - An element that decays into Y bosons. Incredibly rare, and kind of unstable.

Duplium - An element that decays into W bosons. Incredibly rare, and kind of unstable.

Ferrumitanium - An element that decays into gluons. Absurdly rare, and quite unstable.

Luxanium - An element that decays into photons. Absurdly rare, and quite unstable.

Gravitasium - An element that decays into gravitons. Absurdly rare, and quite unstable. One of the elements that has the highest demand within the Ostrumian Federation.

Lucidium - A mysterious element that has strange effects on space-time. Believed to have connections with dark-matter and dark-energy. Only found if made artificially. Very unstable.