Steven Universe - The Diamond Authority Murals

Some speculate the orb between her hands is the orb in the moon base, or its meant to represent homeworld. Yellow D's already shown she's not the most rational leader, so maybe White's the head honcho.

My theory is that White diamond is the leader of the authority, while Yellow diamond is leader of the Military of homeworld, Blue diamond centers around more political ends, and Pink Diamond may have been head of colonization efforts