It's concept art, not canon (thus making the caption for the imgur link inaccurate).
Clearly, it's for a drafted but rejected version of the Cluster plotline—one where the Cluster was a very powerful monster, but not one that would destroy the Earth just by forming.
Gem's bodies change their mass based on the gravity of the planetoid they're on, which is why Ruby was able to stand and walk on Steven's bubble. The Cluster would not have any planet to stand on if she was just orbiting around the Earth, so the only mass making up her body would be her gem.
edited 2nd Jul '17 1:47:01 AM by PushoverMediaCritic
Fall speed isn't reliant on mass of the object, only the mass of the planet(oid) you're on.
It's more like they all have a subconscious version of Rose Quartz's "floaty powers" so they always fall at 9.8 m/s2 (or whatever) no matter what planet they're on.
edited 2nd Jul '17 5:44:34 AM by SalFishFin
edit: Remember the poster with mystery girl? It's been posted at a higher quality
(from the artbook obviously )
edited 2nd Jul '17 7:24:05 AM by Ultimatum
have a listen and have a link to my discord serverThe equation for fall speed is an approximation used when the object's mass is very very small compared to the planet(oid) it is on. Otherwise, the planet(oid) would fall towards the object (it always is, but in the former case, it's falling very very slowly).
For gems to move around the same in any gravity field, they really would have to change the pull of gravity directly, not just increase or decrease their density.
edited 2nd Jul '17 2:16:04 PM by thatother1dude
I can't remember if I brought this up before but the image of the famethyst reminded me,I was actually really surprised they never had to talk Amethyst out of a I Choose to Stay when it came to the zoo,
have a listen and have a link to my discord serverShe got over those problems long ago...
Rules of the Internet 45. Rule 45 is a lie. Check out my art if you notice.edited 4th Jul '17 12:54:20 PM by xanderiskander

What are you talking about? Its a beautiful abomination
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