Diamine Inkvent Calendar is an advent calendar with a tiny (7ml) bottle of ink behind 24 windows, and a larger, 30ml, bottle of ink behind the 25th window. All the inks are limited edition, and only available through this calendar. You can read more about the calendar here.

Day 15 is perched on a branch and looks a bit like it. I can’t say this enough: I really love the design of this calendar. It’s so well thought out, beautiful and clever.

Day 15’s ink is Diamine Festive Cheer, a deep, royal blue ink with a purple-golden sheen. It offers less shading and less sheen than Diamine Polar Glow.

It’s a beautiful ink, but it’s a little underwhelming when compared to Diamine Polar Glow, and even the lighter Diamine Jack Frost.

This is a saturated colour, so as much as I trust Diamine, I’m hesitant to use it in vintage pens, just from a cleaning out and staining perspective, but it’s still a nice ink that will probably one of the first ones I finish from the set, just because it’s a pretty practical colour.