Diamine
The Diamine Black and Greys
Black ink is another main-stay for many pen users. The three blacks are very close in tone, basically offer the same writing experience in terms of ink performance. My comments on Diamine ink performance also apply to this colour group.
Overall, Onyx Black is the one colour that I am currently using the most.
Not part of the regular line, the Diamine Registrar's Black has ferro-gallic content, that this gives this ink its permanent qualities, but that comes at a price. Ferro-gallic ink is corrosive so I am not sure I would be putting that in some of my upper lines of pens.
Information and reviews on other colour groupings is available:
Information about Diamine Ink is available on their web site: www.diamineinks.co.uk/


I like this colour. It has good flow and a good dark tone. There is no under colour that comes out, even when writing with a very broad nib.
I wrote a line of text, waited five seconds, and then dipped my finger into a cup of water and ran the wet finger across the text. Not bad.
Onyx Black
The ink is not waterproof, but to see how this ink reacts with water I gave it a water test.
Colour swatch from Diamine Web Site follows:
Quartz Black
Colour swatch from Diamine Web Site to the right:
Grey
