It's Lapis Lazuli!
I wound up getting inspired by a cover of "Stronger Than You" that was instead put in Lapis's POV. Steven Universe is one of my favourite shows ever, and probably one of the few things that will ever inspire me to do fan art of it.
The cover can be found here: https://www.youtube.com/watch?v=ukwGBat5iAY
Link
OphyOpheliac
The water effects look lovely!