Board Thread:Ask the Staff/@comment-11398208-20160203044032/@comment-28584561-20160203085351

Considering that Lazulis are exceptionally powerful, it wouldn't fit the homeworlds ideals of the powerful you are, the more useful you are to them. Using Lazulis as retainers in a very confined context, they'd be of more use to them on the battlefield rather than as information holders. Also she was imprisoned, it would indicate that she was placed there against her will. As we've seen from other homeworld gems, they are rather loyal to their placement in their so called "caste system". The Lapis we know was very loyal to homeworld (before seeing that it had changed). If she was used as a retainer of information, she wouldn't have deviated from her original purpose. She wanted to be set free and return to homeworld and continue her intended purpose.

>> ''lapis says she was imprisoned in the mirror. She doesn't ever say who, to my knowledge.''

She says it was the Crystal Gems. Or she assumes it was them. Because she assumes that homeworld wouldn't do that to her, imprison her against her will and what not because being in a mirror wasn't her original purpose, if you didn't catch that already. I mean Pearls could already store information and have the ability to project it, what use is a fragile mirror? The first thing she asks Steven when she was set free from the mirror was that if Steven was a Crystal Gem, so she knows who they are. She screams you in an angry voice when meeting them. "Did you even wonder who I used to be?!" would indicate she was something more than a retainer of information, a slave, a tool.

>> the crystal gems say the mirror is used to teach homeworld knowledge, and they never speak of the incident again...

It isn't far to assume that homeworld gems used weak gems as things to just power tools. Pearl said that "How could I have known the Gem inside the mirror could be so powerful?" Who's to say that similar mirrors aren't powered by other weak Gems?

>> the mirror itself is an artifact of the prewar era, supposedly claimed by the crystal gems.

It was never stated that it was an artifact predating the war. Pearl said " We found this Gem-powered mirror at the Galaxy Warp. It can capture and display any event it's witnessed in all of Gem history." She says it only displays events it has witnessed in all of Gem History, so if it was made post-war, it would only display the history of any events that has occurred post-war, as those are the only things it has witnessed anything before that is unknown to it.

Because there are so many questions and so many points that anything could be possible, and as such will be treated as speculation. Unless the show, the creators, or any canon material openly reveals it and removes any doubt, then it can be be no longer speculation.

Remember, just because it is obvious doesn't necessarily mean it's true, especially if there are many holes that can still be filled with correct assumptions.