@The1Rolling1Boy It was mainly a joke. In all honesty though, based off the diamond murals on moon base they have either 25 or 26 because I can't tell if one circle is a moon or a planet. Either way, even after all the years of rebellion I'm assuming both blue and yellow diamond have been busy for reasons (must resist giving spoilers). So I'm hoing to assume they don't have much more than 25.

@Gisk Seeing Pink Diamond in the mural only holding up Earth, which has only one dot by it, I would infer that the small dots placed by larger circles are supposed to be that planet's moons. As well, you can actually see what kind of planet the diamonds captured. The size of the circles, as well as the lines crossing through a few of them, could very well indicate their actual size compared to other celestial bodies and if they have rings (like Uranus or Saturn). The lines could also represent a planet's axis.

• Pink Diamond's feet and base are crumbling in her mural, perhaps alluding to her death and 'shattering'
• There are red auras around three of the planets circling Yellow Diamond's head, perhaps Nebulas or even stars that she's conquered near those planets.
• Finally, and perhaps most importantly, planets White Diamond has conquered seem to have moons that brandish the line of planetary axis or ring(s). No other diamond in the mural has moons with those lines. Thus, this leads me to believe that some of the dots in White Diamond's mural represent solar systems she controls, with the moons now representing planets and the planets representing stars or other large, celestial bodies.

I only just noticed that Pink isn't glowing like the other three. It's a lot more obvious on my smaller phone screen.

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What if they all fuse to make Black Diamond. That would be so pretty