Caveat: this year’s Inkvent appears to have elusive ink colours. I suggest reading my description of the inks and not going by the photos alone, and comparing my results with those of other reviewers. 

The Diamine Inkvent calendar is an advent calendar with 24 tiny (12ml) bottles of fountain pen ink behind 24 doors, and a larger, 30ml, bottle of ink behind the 25th door. All the inks are limited edition, and, at the moment, only available through this calendar.

Day 17’s ink is Diamine Thunderbolt. It’s a periwinkle blue ink that is very bright, saturated and beautiful.

It’s a standard ink with a relatively small amount of shading because it is so saturated.

Here’s a Col-o-Ring swab of Diamine Thunderbolt. Yes, it’s that bright in real life.

I used a Sailor 1911 with a Naginata Togi medium nib to test out Diamine Thunderbolt.

I decided to do a quick sketch of Disneyland Paris’s Big Thunder Mountain rollercoaster, just for fun.

This was drawn on a Kanso Sasshi 3.5” x 5.5” Tomoe River Paper notebook (the notebooks I have were bought in 2016, and so they contain the old Tomoe River paper).

Finally, I wrote a page in my Midori Journal:

Another blue ink for a very blue skewed Inkvent. I love the colour so much that I will consider buying a bottle of this once Diamine start selling them. As it is, it was fun writing with this ink, and getting to play with such a fantastic nib again. Is it a festive ink? I guess that it’s winter appropriate, and I’m glad that it was included in the calendar, but there are more thematically appropriate inks out there.