Soulstones

Summary
Soulstones are similiar to Dwarven Gemstones and Soul Binding Objects. They were vessels to carry the Spirits of Men and Dwarves alike. Foreign in the eyes of most the Soulstone simply carried enough of ones soul that should they die some of the power residing in there bodies would last inside of it creating a very powerful artifact. Although very much close to the magic of Soul Binding. Soulstones only carried as much of a spirit as the caster decided. In a letter The Faceless One says there are only 6 Soulstones However the Demon thus then describes that Durzark's is the most poweful. The only known soulstones include: Olfik Shadekeeper's Stone. Zitrin's Stone and of course Durzark's Stone.

Triva
Of the three known stones the unknown stone are rumored. The most evidence supported one is the Stone that the Three Minister's wield is Gorlzrush's. Not being Zitrin the Minister's Stone as it is described in a different appearance it is heavily supported in evidence that Gorlzrush made one and the Minister's found it which lead to their corruption.