Ink Review #555: Robert Oster Grey Seas


It’s time to take a look at the Robert Oster 1980’s collection, starting with Grey Seas. I bought a sample of this ink and after trying it, I immediately purchased a bottle of ink from Pen Chalet.


The color:

Grey Seas is a beautiful pale blue.



In large swabs there is a large range of shading but no sheen.


Writing samples:

Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.

Dry time: 30 seconds

Water resistance: Low

Feathering: None

Show through: Medium

Bleeding: None

Other properties: high shading, no sheen, and no shimmer. I was able to see some shading in all nib sizes.

On Staples 24 lb copy paper there was just a little bit of feathering and bleeding.

Comparison Swabs:


Grey Seas seems to be a lighter version of Evening Sapphire, which I love as well. Click here to see the Robert Oster inks together.

Longer Writing:


I used a TWSBI Eco Pastel Blue with a fine nib on Tomoe River paper. I love how this pen and ink look together. The ink had an average flow.

Overall, I am so happy I bought a full bottle of this ink since I really love it. I love the color and the shading, it’s just beautiful.

Disclaimer: I purchased this ink myself, and all photos and opinions are my own. This page does contain affiliate links, but this post is not sponsored in any way.