It would be pretty tragic for poor Peridot if they weren't.

It doesn't take much to finish her off after that, even though she much prefers Lapis's mouth to her hands. As she nears her peak, Peridot involuntarily lets out a soft, gurgling whine, which builds in volume and intensity until she finally cums, jizz spattering about indiscriminately.

She lets her head fall back and awoos when this happens, shuddering exultantly against the arm Lapis has her pinned with.