Talk:Season 2/@comment-26548131-20150709011826/@comment-26587298-20150716170157

In the short "What are gems", Pearl said that a gem can be retained inside her gemstone if it was attached to an object (Like Lapis, who was attached to the mirror).

Since Rose's gemstone is attached to Steven, maybe Rose is inside the gem. That could explain also why Rose "Gave up her physical form"