[@EurmalEye] Yeah. Manta's water blessing/crystal would look something like this.

[img]https://gbf.wiki/images/thumb/b/b5/Weapon_b_1040410000.png/462px-Weapon_b_1040410000.png[/img]

It would be a small blue orb essentially that he wore on his neck or wrist or whatever. It would be stronger than Jane's gems as he has more control over the water element.