Montblanc is one of my favorite ink brands as it makes up three of my five favorite inks. Montblanc Jonathan Swift Seaweed Green is a limited edition ink which means it sells at a premium price. Prices vary considerably since availability is limited but I found mine for $17 for a 35 ml bottle. At 49 cents per ml this puts it solidly in the luxury ink category and about twice the proce as the standard Montblanc inks.
The ink color immediately reminded me of Montblanc Racing Green, #3 on my favorite inks list. When swabbed the ink is a little lighter than Racing Green, but when used from a fountain pen it’s a fairly close color, just a little less saturated.
Seaweed Green is not a wet, free-flowing ink. But like other Montblanc inks it’s consistent and puts down a nice line. The ink has enough water resistance so that it can still be read after having water spilled on it. Dry time was very good. I didn’t experience any feathering or bleed-through.
The color does vary quit a bit depending on the nib and paper. In my thin wet nibs the ink was noticeably darker. With drier nibs or nibs where the ink spread out more, like my broad stub the ink had more of a khaki color. I like the variety in the way the ink performs.
There was some nice line variation with both the stub nibs. There was some nice shading with the wetter nibs, when there was enough ink put down to actually shade.
I tested this ink a bit differently this time, skipping the TWSBI Vac 700 opting to use four different pens.
Sheaffer PFM I with a fine nib – the ink was at it’s best in this pen. While it’s a fine nib it’s the wettest nib of the bunch that I used. The ink when onto the paper with a nice dark color. Because of this the ink took as long to dry when using this pen as it did when I used the broad nib. No signs of feathering. I liked this pen/ink combo so much that it’s been my daily writer.
Esterbrook J with 1 #2442 Fine Stub – a nice consistent flow without any skipping or other problems. The ink was drier with this nob but still problem free. Drying time was less than 5 seconds.
Caran d’ Ache Geneve with a medium nib – this was the only convertor fill pen of the bunch and was a problem pen. It’s been a long time since I used the pen but it’s always been a good writer. I had flow problems mainly from the ink clinging to the convertor, but it was inconsistent from the beginning. I’ve yet to try another ink in the pen, but this was so unlike the other pens I used I’m blaming the pen. You’ll see some smudges on the Rhodia sample. This was when I had just forced ink into the feed because it was stuck in the convertor.
Pelikan M620 Shanghai with a custom broad stub – while the widest nib used, it was ground and tuned by Mike Masuyama to write on the dry side. So dry times were comparable to the PFM I fine nib.
It’s a well behaved ink with a color I like. Is it worth the premium? I bought mine at the low end of prices I’ve seen. It’s a well behaved ink with a fast drying time and pretty good water resistance so I don’t regret buying the bottle. I also like that the color varies depending on the nib used.