Diamine Yellow is the lightest of the classic Diamine inks. I was hesitant to try this ink because it is so light, but every ink is good for something, so let's find out what this ink is good for. I purchased my bottle of Diamine Yellow from Cult Pens. My bottle is 30 ml of ink.
Yellow is a bright yellow, with no shading or sheen. Seasonally, I would use this in the summer.
In large swabs, Yellow looks darker and more orange than it does in writing.
In ink drops, Yellow looks a lot darker than it actually is.
Feathering: Yellow didn't show any feathering on any of the papers.
Ghosting (show through): Yellow had low ghosting on all of the papers, but I think that is due to the fact that the ink is so light.
Shading: Yellow had no shading on any of the papers, and didn't show any sheen.
Bleeding: Yellow only bled though on Baron Fig paper, but did great on the other papers.
Swabs for comparison, left to right: Private Reserve Buttercup, Diamine Yellow, and Rohrer and Klinger Helianthus. The closest ink to Yellow is Buttercup.
Left to right: Robert Oster Peach, Diamine Amber, and Diamine Sunshine Yellow. All three of these inks are a lot more orange than Yellow is.
I used a Noodler's Ahab flex nib on Tomoe River paper, and large writing, hoping that it would lay down ink wet enough that the writing would show up better. I think the ink is way too light for long writing.
Overall, I think Diamine Yellow is way too light for everyday use. I would probably use this ink as a highlighter ink or for lettering art.
Disclaimer: I purchased this ink myself, and all photos and opinions are my own. There are no affiliate links on this page.