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 4’s window isn’t exactly aligned with the printing, but you get a cute snowman with it, so who cares?
The day 4 ink is Diamine Polar Glow, which is a royal blue ink that has sheen. How much sheen you ask? Well…
There’s so much red in that gloriously rich blue. I used a vintage italic Waterman ideal nib, and this was drawn on a Kanso Sasshi 3.5” x 5.5” Tomoe River Paper notebook, so this is probably close to maximum sheen, but still, it’s impressive.
Even as a standard ink, Diamine Polar Glow pops. The blue is deep, rich, and yet shades a lot, from cyan to royal blue (you can see it in the leaves in the drawing above). The red sheen just adds a little extra zing to it, without overshadowing the already good qualities of the ink.
This is an ink designed for wide, broad, italic, flex nibs that lay down a lot of ink. It really shows it’s best properties on Tomoe River paper, but even on Rhodia/Clairefontaine paper I could see sheen in every letter (using the same broad italic nib).
Would I buy a bottle of this, if Diamine offered it? Probably yes, since it’s dark enough for office use, but is also more interesting and appealing than a run-of-the-mill dark blue.