Though it would have made all the sense in the world if the sixth and final Infinity Stone—specifically, the Soul Stone—was hidden away in the heart of the vibranium meteorite that crashed into Wakanda, Ryan Coogler’s suggested that’s probably not the case. So the Soul Stone’s still out there somewhere in the vast…
Source: Gizmodo – What If We’ve Been Staring at Avengers: Infinity War’s Missing Soul Stone This Entire Time?