Tags
Ahab, Ancient Copper, Antietam, Apache Sunset, Australian Roses, Baystate Blue, Black Swan, China Blue, Diamine, Diamine Sepia, English Roses, Fine Nib, Flex Nib, Fountain Pen, Fountain Pen Ink Review, Fountain Pen Network, Ink, Ink Review, Kung Te-Cheng, NAV, Nib, Nibs, Noodler's, Noodler's Flex, North African Violet, Pasternak, Pens, Presidential Blue, Purple Ink, Purple Martin, Red-Black, Rouge Hematite, Sepia, Shading, Wild Strawberry
This is one of, if not my favorite, shading ink. Gorgeous and highly recommended!
The Five Cat PENagerie 
I love this ink and surprisingly, I have bottle or samples of each od the inks in your comparison!
An Exceptional Exemplar! I’m linking to it from my own post and I think you’ve convinced me to purchase an Ahab flex nib pen.