Black Soulstone

The Black Soulstone painting.

The Black Soulstone was spotted in April 2011, hanging in the Diablo III wing of the Blizzard Irvine art museum. [1]

The painting's caption reads:

Black Soulstone Concept

Bernie Kang

2010

Nothing more is known about this work, and where it fits into Diablo III's story or lore is unknown. Blizzard has offered no comment on the object/painting.

Leading Theories

In the absence of any official word, fan speculation has run rampant.[2] While there is no leading consensus, many fans feel the Black Soulstone is a shard of the Worldstone, which Tyrael shattered after Baal's death, in events that took place at the end of Diablo II: Lord of Destruction, twenty years before the story picks up in Diablo III.

Why the "soulstone" is black, where it's located, and what it's been doing for the past twenty years is entirely unknown.

One theory holds that Tyrael was imprisoned in a shard of the Worldstone, perhaps this black one, and that's why he has not been seen since. There's no known lore to support Angels being trapped in soulstones (as Diablo, Mephisto, and Baal were), but it a soulstone can contain the essence of a demon while its trespassing on the mortal realm, why not an Archangel?

Other fans have suggested that this is just another soulstone created by the High Heavens (Tyrael or some other archangel) to contain another rampaging demon let loose upon Sanctuary.

Nothing is likely to be confirmed about this relic until the game is released and we can see how it's handled in the actual storyline.

The Black Soulstone (lower right) hangs in the Diablo III wing of the Blizzard Irvine art museum. April, 2011.