Small, sneaky thing I like about Peridot's dialog:

[snarp]

She answers every question anyone ever asks of her until "When It Rains" - but no one but Steven has ever answered a question for her.

(He has answered all of them. At least one question answered, every single conversation.)

The only exception to the rule:

PERIDOT: don't you gems have anything better to do than annoy me???

AMETHYST: nope

Peridot has also never actually asked a non-rhetorical question of anyone but Steven - with, again, one purple exception:

AMETHYST: is it like a big hunk of granola

PERIDOT: what's granola???

Steven really is much more useful than those clods.