Board Thread:Questions and Answers/@comment-7657843-20161018162435/@comment-27020644-20161029173759

I don’t think the gem in Heimdall’s armor could be the Soul Stone.

The gem in his armor is the same size as the first 5 Infinity Stones, if not smaller.

We know that the Soul Stone is the largest Infinity Stone.

The only way I could see it being the Soul Stone is if it grew with the number of souls it would absorb.

