Late november. The days are noticeably short and the first Christmas decorations and festive lights in the streets are there. I was looking for a cold, but still blue color to write in this season. Prussian Blue is such a color. Elegant and classic enough for the workspace, beautiful and different enough for personal correspondence and notes.
The ink is very well behaved, a pleasure to write with. Most if not all Diamine inks are great and this one is no exception. No feathering, enough lubrication and beautiful shading. Maybe the ink is a bit wetter than average, but with 35 secs drying time still reasonable. There is even some water resistance.
The ink is quite low in saturation. It did remind me a bit of Herbin's Vert de Gris (green cousin?). Other blues like Iroshizuku's Shin-kai or Sailor's Kikyou are a lot more blue and - especially Kikyou - also more saturated.
All is all this is a nice winter ink. I'm sure I will use it regularly at least up to and including January.
Crown Mill Vellum paper