Modern invented name with a Latinate -ius suffix applied to Jad-, giving it an ancient Roman aesthetic.
Jadius is a modern invented name that adds a Latinate -ius ending to a Jad- base, giving it an antique Roman aesthetic. It sounds like it belongs to the world of classical nomenclature even though it is contemporary in formation. That makes Jadius feel formal and a little dramatic. It has the advantage of being rare while still sounding structurally coherent, which gives it a learned, polished quality.