White Diamond surveyed the endless lines of obsidian soldiers covering most of the solid mass of planet Vulkan-1. She stepped out into the balcony so that she could be fully seen by the endless armies, who responded not with a diamond salute, as they couldn't, due to their equipment, but by raising their right fists in the air.
It was quite a shame these were a failed project, she thought to herself. Easily harvestable, quickly forming, efficient in both resources and their purpose… But at the same time rebellious and fragile… Such shame it was… She would enjoy having such an army…
White Diamond cleared her mind and opened her mouth.
Yellow Diamond looked at the horde in front of her with distain as she stepped out into the balcony. At least being here, on Vulkan-2 meant that she could finally forget this failure. The endless lines of borderline renegades raised their right fists as a salute. She could barely hold her disgust back at seeing them perform a salute so similar to the one used by the organics.
It took nearly ten years, but finally, she would be able to remove this filth from her hands. She looked up slightly at the thousands upon thousands of spaceships in orbit which were there to transport the legions to the front.
Yellow Diamond controlled herself and opened her mouth.
Blue Diamond stepped out into the balcony of a palace on Vulkan-3 completely calm, even though she had her doubts, was this truly the solution? She knew that prophecies so abstract could be changed, she had done it several times herself, but she wasn't sure this would truly work. These obsidians had already shown signs of disobedience numerous times, and were seen doing it. She of course disposed of every witness, but that still didn't help this situation. Who could be sure these rebellious gems wouldn't truly rebel when left to their devices, one of them had done such an act already, and so what would prevent others?
Blue Diamond steeled herself and opened her mouth.
Pink Diamond calmed herself down and stepped out into the balcony. She gazed at the massive army arranged in front of the palace on Vulknan-4. The lines of brutal dark grey gems raised their right hands in a barbaric salute. Pink couldn't imagine why other diamonds would create something so savage and brutal. At least her gems were supposed to be better than this.
Pink Diamond calmed herself and opened her mouth.
The majestic voices of the four diamonds echoed across the four planets, each syllable perfectly synchronized.
"We are the gemkind, we are perfection made form, and we are the masters of the universe. But there are those who dare to defy our rightful claim. These children of dust dare to claim that the universe is theirs, that the future belongs to organic races. But they are all fools.
While they tamed fire, we subjugated stars. While they looked at the sky, we knew the stars. And yet, they dare to persist in their claims. They dare to defy us, they dare to resist… And so they shall be crushed for their insolence!
You shall be the instrument of our righteous judgment upon those who dare to deny our right to dominate the universe. You shall show them the superiority of gemkind!
We the Diamond Authority, the supreme rulers of all gems, empresses of the universe announce the Vulkan crusade!"
The Diamond Authority ended their brief but powerful speech. And as it ended, obsidians opened their mouths and responded.
"As it was commanded, so it shall be done! We shall sweep all in our path!"
And as the oath rang across all four planets, the endless obsidian armies started boarding thousands upon thousands of space vessels. And as those rose to the sky filled with soldiers, White Diamond smiled.
The Vulkan crusade began.