"Of course. The Great Diamond Authority. Each Gem has their specific purpose, but each Gem is also made for a specific Diamond." And she had been made for Blue Diamond. "Everything we do is for them." Or, did. Lapis is a traitor to Homeworld, even if she'd rather not be. Not part of the Crystal Gems, not affiliated with Homeworld.

Lapis still misses it back on Homeworld, even if Earth is her new home.