Although have not had much interaction together, Pearl and Peridot both share similarities, such as their gem placement, high intelligence and their dedication to their mission.
In "Catch and Release", Pearl talks about there being no other options than to keep Peridot hostage in the bathroom and jokes about keeping Peridot outside on a leash, she briefly laughs and reconsiders.
In "Back to the Barn" Peridot constantly treats Pearl like a slave and underestimates her knowledge of technology, however after Pearl's defeat Peridot learns to respect her more, and they begin to work together.
In "Too Far" Pearl calls for Peridot to show her the blueprints for the drill much to Peridot's distaste. She then begins tampering with a voice recorder given to her by Steven which Pearl questions. Peridot admits "the Pearl has an aptitude for engineering that I begrudgingly respect."
In "Log Date 7 15 2" Peridot said that she appreciated that Pearl was trying to entertain her.
In "Log Date 7 15 2" Peridot said to herself that it was correct for Pearl to noticed she got taller, seeming like she wanted to impress her with her new height with her paint bucket shoes.