<p>A large majority of the clusters bubble is because of itself, yes Steven helped join the bubble but I think the Cluster is the source of its own bubble for the majority. So no I dont think if Steven dies the bubble will pop. </p>

<p>That's a good point, we don't know if when a gem dies the bubbles they've created "die" with them. I think that if/when Steven dies the bubble he put around it would still be there, if it does "die" with him however, I guess the cluster could just bubble itself since it was shown doing that anyways. </p>

<p>Opal has bubbled gems and when she unfused the bubbles were still there, so if Steven dies the bubble will still be there </p>

<p>Ah, thank you for clarification. But since gem things are temporary, I'd think that the bubble would be gone with them. </p><p>
</p><p>(Note: Before you go on about Rose Quartz being dead, she technically isn't dead. She's inside her gem.) </p>