Diamine Blue Edition Happy Holidays is medium velvety blue fountain pen ink with medium shading, high red sheen and aqua blue-green shimmer. It dries in 15 seconds in a medium nib on Rhodia paper and has an average flow. The unique and whimsical shape of the bottle conveys the magic of the Christmas season which can be celebrated year round with this release. Originally created for the first ever Diamine Inkvent Calendar in 2019, the collection features 25 inks perfect for use with fountain pens, brushes, and nibs.