Gravitas Pens

Straight lines have a darker appearance and curves are more red.

ok, this Writer’s Blood is blowing my mind. I am so obsessed with watching the lines form as I am putting pen to page. Every line and letter is a blend of red and black. Somehow (magic? Voodo? Unholy promises? (Don’t let it be science)) the red and black inks do not blend. The appearance is a Red and Black line. Under 10x magnification it is 2 distinct colors. This is CRAZY!

After playing around with this ink a bit, I noticed the chamber behind the feed was running low and the reserve was not charging the way I expected, even with the back cracked open a bit. When the feed chamber ran low, the blended ink had a darker appearance with less red ink coming through the nib. I could play around with the vac feature of the pen and bleed the ink into the reserve chamber and then feed it back into the feed chamber. This is only possible to view with the clear ULTEM material the pen is crafted from. After a bit of writing, the lettering began to have a blended appearance again. Under 10x magnification, the red was still there, just more black ink was present.

It takes a while to get the ink to start to have the blended appearance again after setting the pen down for a few hours. Just get out a scrap paper and write a few lines to see the lines start to blend more efficiently.

I’m glad this is a large bottle and the pen writes wet, because it is a dopamine hit to write with this ink. I bought the Writer’s Blood on a lark. Gallows humor, It’s appealing. I completely underestimated how awesome this ink is. 5 stars barely rates this product sufficiently.

I purchased the black aluminum and Ultem version of the Gravitas Vac 2.0 with a fine nib, and overall, this pen is easily a 5-star experience for me. I genuinely love it.

From the moment I inked it up, the pen made a strong impression. I filled it with Organic Studios Nitrogen Royal Blue, and the Kraken filling system was incredibly intuitive to use. On my very first attempt, I was able to get the pen nearly completely filled, which says a lot about how approachable and well-designed the mechanism is. The ink capacity is also excellent — this pen holds a large volume of ink, which is a real advantage if you write frequently or simply do not want to think about refilling every few days.

Design-wise, the Gravitas Vac 2.0 is beautiful. The combination of black aluminum and Ultem gives it a distinctive, modern, and purposeful look without feeling flashy. It feels fantastic in the hand: substantial enough to feel premium and grounded, but not so heavy that the weight becomes distracting. The balance worked very well for me, and the overall feel of the pen communicates the kind of careful machining and engineering that Gravitas is known for.

One detail I especially appreciate is the stainless steel grip section. It has micro-knurling machined into it, and the result is excellent. The section never feels slippery, even during longer writing sessions, but it also does not feel abrasive or uncomfortable. It is a practical design choice that also adds to the pen’s overall industrial elegance.

The writing experience is where this pen really shines. The fine nib is silky smooth and glides across the page beautifully. With the Organic Studios Nitrogen Royal Blue, the pen writes juicy, controlled, and expressive, with just the right amount of feedback. The sound on paper is also extremely satisfying — not scratchy, not muted, but the perfect kind of audio feedback that makes writing feel tactile and intentional. At times, it almost feels like writing on glass. The nib also has what I would describe as the perfect amount of bounce: enough to give the writing experience character and comfort, but not so much that it feels soft or imprecise.

The packaging was also excellent. The pen arrived in a custom case with a lined bed and a restraining strap to keep it from shifting around during shipping. It made for a great opening experience, and the pen was nestled securely and presented beautifully. One small note: if you push the pen too far down into the hollowed-out cavity of the case, it can get a little stuck and may be hard to dislodge. It is not a major issue, but it is worth being aware of.

My only real complaint is the lack of a clip. I understand that the designer has said clips are not something they personally enjoy, and I respect that design preference. Still, from a practical standpoint, I would love to see either an optional cap with a clip or an add-on clip similar to what Kaweco offers. For a pen this good, having a clip option would make it even easier to carry and use every day.

Even with that small caveat, I would enthusiastically recommend the
Gravitas Vac 2.0 to anyone looking for a fountain pen made by someone who clearly has a deep love for fine engineering and an understanding of what makes a writing instrument special. I have written with luxury pens that sell for three or four times as much, and the Gravitas holds up in every way that matters. It delivers a premium feel, a beautiful design, an impressive filling system, and one of the best writing experiences I have had.

It may be a bit heavy for some users, especially in heavier materials — my buddy’s titanium version adds even more weight — but the black aluminum and Ultem version fits me very well. For my preferences, the weight, balance, grip, nib feel, and ink capacity all come together beautifully.

In short: this is a thoughtfully engineered, beautifully made, extremely enjoyable fountain pen. I really do love it.

o.k

Absolutely fabulous you definitely being a quality product.I’m trying to find out what colour the ink is also

I purchased my Dinkey Cupronickel from penworld.eu.
Ergonomics is great as I have come to expect from Gravitas:
1. The center-of-gravity lies on the web of my hand (when capped) and thus affords similar dexterity to much lighter pens (sub 20g) despite the hefty weight (I am used to pens much lighter than this).
2. The micro-machined grooves on the grip section are very helpful against slippage while not feeling obtrusive when gripped.
3. The uncapped pen is just long enough to write with in a pinch.
4. The ACME-Thread for the cap which allow it to thread/unthread with just 0.6 of a turn is the most convenient screw-cap design I have ever encountered. I hope this feature finds its way to other models too.

Fit and finish is excellent. The machined finish is smooth to the eye. Chamfers are done elegant and unobtrusive. The Liner in the cap is securely attatched and the cap does not wiggle at all when screwed down. The Cap thread is smooth and starts easily. Impossible to cross-thread. My only complaint is regarding the force required to post the cap firmly. I estimate about 4-5 kilograms of force to push the cap securely to post. Less than that, the cap would wiggle loose while writing and possibly detatch when laid down, which I do quite frequently when writing.

The nib (I have ordered a Fine) is very smooth and can create minute line variation when subtle pressure is applied. It also writes smooth upside-down for thinner line widths.
Accessories: The pen came with a ziplined hand pouch at about 14x5x4cm. A little to big to be practical but nontheless appreciated.
Overall, the pen invokes a strong sense of quality (bonus point: cupronickel has a similar look to silver) and its practicality certainly does no disappoint. I would keep it away from keys and such since cupronickel is not very scratch-resistant to everyday objects like keys.

Excellent pen that make an impression on people when they see you using it.

Sometimes you just need a sturdy, sleek, chunk of aluminum to hold a pen. It serves as a home for both a Dinkey and Quark on my desk.

This is my first ultem fountain pen and I can see the appeal. I went ahead and eyedroppered it and it's great.

I wanted the Delrin pen because I have a history with this material. The pen is well weighted, the grip section is just right and the Gravitas nib is amazing. I highly recommend it.

wow! i have a couple Sentry pens but had held off on getting one of the earlier vac models -- at great duress to my self-control may i say! -- but when i watched the reviews for this one i knew the time had arrived. and what a great pen it is! super comfy, nice girthy section with milling to provide a 100% non-slip grip, super smooth vac mechanism that sucks up a seriously big gulp of ink, VERY nice new Gravitas nib (both smooth and every so slightly toothy at the same time!?!), looks fab and while not cheap it's not breaking the bank either. i'm struggling to think what boxes were not ticked here and i got nothing. worth every penny IMO.

The first thing that struck me was the overall build quality. It’s like a Porsche of pens. Maybe if the 959 were being built today with the spirit of the endeavor intact. Initial writing impressions, coming from the Pelikan m809 struck me as a little stiff, but after writing for a while, I began to appreciate the control of this particular level of fine bounce. I have large hands on the smaller side of large, bigger than medium and this pen just fits better and better. I appreciate the thickness and variety of grip options when drawing.
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The Vac fill is super satisfying! I have one other: Asvine v126. I’d say that one is good for the price, but not like this. I use the bottom ink window more than I expected. It’s an excellent feature. I always know when I need to vent the top. Lovely. Thoughtful! Engineering excellence! All of it conveys high quality through the senses, in the smoothness of my medium nib, the accuracy, consistent ink flow, cap screw mechanism, vac fill mechanism, fine texture on the grip, the quote on the end ring by the Vac Fill. Nothing wobbles. All of it feels tight, well made, built to last and I love writing with it every single day. I use my Pelikan for journal headline and then my Gravitas for the body copy. Sooo satisfying with Kon Peki ink. Thanks for the EXCELLENT product. I absolutely love using it! Can’t recommend it any more.

I was excited to get this pen and I was not disappointed. The nib is buttery smooth and very pleasant to write with.

ich war mir nicht sicher,ob die tinte so schön ist, wie mn mir erzählt hat. Ich habe sie ausprobiert und bin schockverliebt. Zum schreiben brauche ich sie nicht, ich benutze sie mit einer glasfeder zum zeichnen. Man kann tolle Akzente setzen, die nicht übertrieben auffallen. Werde mir bestimmt mehr von dieser Tinte holen..

I wasn't sure if the ink was as beautiful as I'd been told. I tried it out and fell instantly in love. I don't use it for writing; instead, I use it with a glass dip pen for drawing. You can create wonderful accents that don't stand out in an exaggerated way. I’ll definitely be getting more of this ink.

ich war mir nicht sicher,ob die tinte so schön ist, wie mn mir erzählt hat. Ich habe sie ausprobiert und bin schockverliebt. Zum schreiben brauche ich sie nicht, ich benutze sie mit einer glasfeder zum zeichnen. Man kann tolle Akzente setzen, die nicht übertrieben auffallen. Werde mir bestimmt mehr von dieser Tinte holen..
I wasn't sure if the ink was as beautiful as I'd been told. I tried it out and fell instantly in love. I don't use it for writing; instead, I use it with a glass dip pen for drawing. You can create wonderful accents that don't stand out in an exaggerated way. I’ll definitely be getting more of this ink.

ich war mir nicht sicher,ob die tinte so schön ist, wie mn mir erzählt hat. Ich habe sie ausprobiert und bin schockverliebt. Zum schreiben brauche ich sie nicht, ich benutze sie mit einer glasfeder zum zeichnen. Man kann tolle Akzente setzen, die nicht übertrieben auffallen. Werde mir bestimmt mehr von dieser Tinte holen..

I wasn't sure if the ink was as beautiful as I'd been told. I tried it out and fell instantly in love. I don't use it for writing; instead, I use it with a glass dip pen for drawing. You can create wonderful accents that don't stand out in an exaggerated way. I’ll definitely be getting more of this ink.