This year the group r/fountainpens on Reddit teamed up with Diamine to create Diamine Earl Grey. It was a group effort, the ink was chosen through voting. I purchased my samples of ink from Goulet Pens.
Earl Grey is a medium grey with shading. It has a blue/purple undertone.
In ink drops there is just the barest touch of silver sheen. It only shows up in the ink drops, not even in the large swab.
Dry time: 33 seconds
Water resistance: Low
Show through: Medium
On 20 pound copy paper there was a little bit of feathering but other than that the ink did great.
I used a fine Lamy 2000 on Tomoe River paper. The ink had an average to slightly wet flow.
Overall, it's a great grey, and pretty well behaved. I haven't reviewed that many grey inks so far, but I really like this one.
Disclaimer: I purchased this ink myself and all photos and opinions are my own. There are no affiliate links on this page.