The sound of her flail is like the sound of the earth splitting open, and the noise fills the air almost as hard as the literal impact of the ground tearing asunder; rocks fly up for miles and come crashing down so that their respective impacts make a noise. One after another with barely seconds inbetween them, and each slightly different. The noise is a symphony, a song of beauteous destruction, and maybe it's just made to happen from Sugilite magic leaking out around her like light from a star, tweaking the world around her just so for this little bit of loveliness in accordance with a dramatic streak.
(For one part of Sugilite is Amethyst, and she does so love her moments of drama; she is like an actor moving in her own play, dancing in a wild path through life, and everyone compelled to move with it. So it is with Sugilite, and the dance is ever bigger and brighter, and where trees bend for Amethyst, mountains jump aside for Sugilite in recognition of being smaller from a cosmic perspective.)
Dust flies up, fountains up. Rock and stone and all the things of the earth alike mesh with the ancient workings of long-dead Gems. Their work is beyond the world, mighty enough to withstand the ages until at least breaking but not mighty enough to withstand Sugilite's unrelenting power. They had withstood hurricanes and earthquakes and terrible things seeking to feed on their magic, but Sugilite was more than them, and broke them easily. Now, the pulverized remnants of natural geology and Gem-artifice alike went up, big as a hurricane-cloud and shooting up where the force pushed it up, and a thunderclap when it moved so fast it made friction against the air and lightning flashed out, lighting all the land for a time.
And the last of the pillars had fallen, and there was a single massive step, bigger than the thunder and the earthquakes and all others, for she was big, bigger than all those things combined. Power and wildness given a face and a name, and her step would have crumpled a truck.
Sugilite raises her head up, up, and she laughs.
The thunder is defeaned and extinguished from the loudness of her laughter. As the lesser bends knee to the greater.
The ground itself break around from the force of it, and another massive joyous step, and the dust is raining down now, and Sugilite surrounded by debris and dust.
There was just one thing on her mind. Rather, one person. She grins, with all the intensity of Garnet's respect for Steven and Amethyst's affection for him, and it is doubled, tripled, a hundred-fold and it all comes booming out as she tilts her head up to shout "Heck yeah! That was AWESOME! Wasn't that cool, little buddy?!"
The air quakes, shakes. She pauses, and there is no answer.
She waits for a long moment, in such a way that she seems detached from time, drifting in and out for the answer to come, and when it does not come she stands up taller, higher than a building and wider than war machines. Above her shades, her brow furrows.
"Steven? Pearl? Hey. HEY!" She turns, stomps, and the ground quakes from the force of it as she marches around, looking and searching with a desperation and surprise that is more fearsome than her anger alone. "Guys!? Where'd you go!? Guys. GUYS!"
She stops.
She stands, bigger than any living thing and stronger than any empire or machine. Yet, just a little bit... her shoulders tilt inward, her arms are slack, and the ground shakes as her fingers drop her weapon.
Her lip trembles, just so very slightly.
"…You guys left me…?"
There is no answer.
Her head bows further, hair covering her face and shades. Maybe it doesn't hide the secret and shameful moistness of her eyes now. Maybe it really is raining, though it is so hard and not a cloud in the sky. And when she speaks one last time, her voice is so terribly, sadly small.
"…Steven...?"