User blog comment:DemonicsFire/RWBY Ships Hurt/Heal/@comment-410526-20160620155523/@comment-24573226-20160620165040

I literally let out a snort at that, Mini.

At least it's not a portmanteau. Best I figure the reasoning is that Emerald is a jewel and Neptune is the sea, and pearls are the jewels of the sea.

The reddit masterlist doesn't even have a name for this pairing.