Talk:The Great Diamond Authority/@comment-5413572-20170115042425

Do we know for sure that Blue Diamond was in charge of the Earth as of 5,750 years ago? We know that "Sapphire had been called to Earth by Blue Diamond," according to Garnet, but this in and of itself only indicates that Blue Diamond was present at the time and was the one who called Sapphire, not necessarily that she was in charge of the colony as a whole at the time.

Not to mention, the Diamonds leaving and deploying the Corrupting Light seems to make more sense if Pink Diamond had only just been shattered- they were caught off-guard when that happened, and the remaining Diamonds (at the very least Blue and Yellow) would have been distraught and furious at the time, ergo they lashed out with the Corrupting Light. Likewise, it would explain why they didn't return once most of the Rebellion had been corrupted and thus the Earth was basically ripe for the taking.

In contrast, the scenario that's being suggested right now is that Pink Diamond was shattered, then Blue Diamond took over for however long she was in charge, and then over time things went so badly for Homeworld that they just up and left, but also deployed two superweapons- the Corrupting Light and the Cluster- and then just abandoned the planet. It's not as coherent or sensible.