"Oh," Steven says, and sits back. He doesn't actually know a whole lot about gems as a wider species, when he thinks about it. Pearl would tell him stories sometimes, but he didn't even know about the true nature of the gem monsters they were constantly fighting until Lapis showed up.

"Uh...Pearl said that they used to travel all over the universe! But I don't think they do as much anymore." He frowns, and clasps his hands awkwardly. "I don't really know why. My family has been on Earth since a long time before I was even born. My mom had to give up her physical form to make me."