I ordered this directly from L'Artisan Pastellier. But this bottle labelled "Bleu équinoxe 6" looks nothing like all other reviews out there (e.g. Visvamitra's review). Instead of a teal, I got a blue ink which is not unlike Sailor Souten. I don't know if it's reformulation or a mislabelled bottle.
But it's a gorgeous colour. It's saturated, wet and smooth, unlike the watery feeling of many other Callifolio inks.
(with Blackstone Barrier Reef Blue, KWZI Azure #4, Visconti Blue)