This is a pretty boring blue ink until you get the golden shimmer shining through. Then it’s very pretty. It does need a fat wet nib to make the most out of it.
Here I am doodling the Inkling.
Here’s the pretty shimmer.
You can find some more reviews of J. Herbin Bleu Ocean on Pennaquod. Note there have been three (I think) versions of this ink. I’ve reviewed the current version.