A very fine navy. Ink must be shaken to stir up the gold, which is subtly notable in shaded parts of the ink (more visible in person than on camera). However, it is not very pronounced and one would likely need to use it in illustration or with a thicker nib (as with flex nibs and calligraphy) to truly have the shimmer present itself. Medium nib LAMY Safari used for attached images. Overall, a fine blue but if hoping for defined gold be sure to use a thick or flex nib.

When I first saw this I was like, wow! Then I bought it and wrote with it. You won't really see much shimmer unless you have at least a medium nib and 80 or more gsm paper. Still, with both of those, not much shimmer. You're better off with Emerald of Chivor or something like that.

I love the idea of "shimmering" inks so thought I would give a sample a try. I do love the ink and the color but what I've found is you only really see neat shimmering effect when there's a considerable amount of ink on the paper. So if you have a fine point I don't know what the ink would look like. I used a glass dip pen with it and with a fresh dip and the ink is thicker and more on the paper the shimmer is obvious, but as the lines thin out some as the ink is used up, the shimmer dissipates considerably. I have no experience with these inks in a fountain pen but I would think to take advantage of what an ink like this is you'd have to have a broad tip to let more ink flow. I also noticed that I seemed to have to shake the ink up more each time I dipped as it seems to me like the "shimmer" might settle? Just seemed that way to me, maybe I'm wrong.

Goulets photos look much better than my results with this ink. On Muji loose leaf paper with a Jinhao 82 fine which writes quite wet, I get a more denim blue that falls a little flat to my eye. The gold shimmer comes through extremely thick for the first two lines or so of writing, and then evens out... BUT, only if you shake the pen every couple sentences to keep the shimmer mixed well. Without shaking the pen frequently, the shimmer goes to near nothing. On more absorbent paper there is 0 shimmer, just a flat blue. I have had no issues with clogs or other problems. If Diamine used the Saragasso Sea blue and added shimmer instead of this base blue, I would probably love it for "special" writing, but for every day or journaling, I can't be bothered to stop and shake my pen constantly.

I love this ink. I used it in my daily pen. The ink is a dark blue, until you get it in the right light, then it has an unusual shimmer to it that makes people take a second look at my notes. One of my friends grabbed my notebook and shifted it back and forth to make sure their eyes weren't playing tricks on them; the ink does indeed have color changing properties. I liked it so much, I used it for an RPG hand out to represent magic writing.

Beautiful!

This is a beautiful blue with gold shimmer. I would definitely use a medium nib for this ink.

The ink is easy to use and doesn't hurt the pen nib. You might have to get the glitter unstuck, but it's a lovely color combination.

Not much shimmer.

Not my favorite! I used the ink on Tomoe River paper to bring out more of the shimmer. The shimmer is visible if you hold it up to the light, but not enough for me to want to buy a whole bottle of ink. On more absorbent paper, it just looks like basic blue ink. Grateful for these samples and that I got to try the ink though :)

Diamine Shimmering Seas turned my handwriting into art. This ink is made for those who write with stub nibs.

This ink is wild! I love it so much. I'm using a TWSBI Eco 1.1 and fairly good but unspecified weight paper - paperblanks kikka ultra notebook. It is beautiful inside a demonstrator pen. It writes on dark & deep, the shimmer emerges as it dries, changing the colour in seconds. This is the second ink from the Diamine Shimmer series that I've tried and I really love them both.

I ordered a handful of the Diamine shimmer inks, and Shimmering Seas was by far my favorite. It's a dark blue, almost midnight blue, which shows off the gold shimmer really well. I tried it out in a cheap Jinhao pen, and had no trouble with flow/skipping/etc.

I purchased two Diamine samples that both contain shimmerng elements. I use a fine point nib, so the shimmering effect does not really show up. I tested it using a wider nib, and the results were beautiful. So, I would not recommend this for everyday writing, but for calligraphy, art, or large print, you can't go wrong.

This ink writes thinner than the cartridge ink that came with my pen, which I liked. It's not as blue as I would have thought, seeming almost black at times. The golden flecks appear more like glitter but i don't mind it!