From the year of 1864 Diamine Co. has been providing immense range of fountain pen inks, Diamine Classic Green Ink is water based ink that has been the foremost preference for many pen lovers. The excellent quality of ink goes along with all kind of brands. It is perfect for fountain pens and absolutely ideal as a calligraphy starter ink. It flows very well and lubricates the nib very well. The ink colors can as well can be diluted or blended to give a multitude of effects.