Innovative and high quality as we have come to expect from Gravitas, write well. It will be great as the Monster becomes available in other colors and different materials.

Great service as usual from Pen Venture!

Smooth and wet writer, very well tuned. Fit and finish are far better than the Gravitas Acrylic Vac, flawless as far as I can tell. The back has some weight to it, but the balance point is only slightly aft of center, so it is still very comfortable. Pilot Iroshizuku ink coats the interior nicely and evenly (no splotchiness from excessive grease on the interior). Fantastic pen and tuning.

I ordered it on a Sunday, it was processed Monday, DHL billed me online for import duties (plus a $17 fee) Wednesday, and it arrived as promised on Thursday. Thanks to Pen Venture for giving DHL & US Customs the info they needed to process it smoothly!

This pen is absolutely fantastic. The textured grip prevents slippage during long writing sessions, which is a huge plus for me since my hands tend to get more moist than others. The sentry has a comfortable weight to it and since it leans on the heavier side, it takes away the wrist pain I get from writing with lighter pens. I haven't experienced any ink leaks during its use/transportation, and after observing the inner workings of the pen, I think it's quite resistant to leakage. The ink cartridge filling process is very easy! My pen shipped from EU to USA and arrived in less than a week with no issues. Very happy with my customer experience with pen-venture.

I got this retro51 lead to go with my retro51 pencil. The lead arrived intact and works as intended.

Wonderful large writing instrument, especially for those with large hands. I chose the extra fine nib. Emy checked the nib for me before shipping. Holds a lot of ink. Writes wonderfully.

Great Pen. Attractive, fits my small hands, wonderfully smooth medium nib, fills like a dream! Great pen.

A light and comfortable pen. Sturdy yet smooth to the touch. The vac filler makes it a trustworthy tool for long writing or cursive practice sessions, but the cap’s lack of a clip or flat section means it likes to travel, so don’t let it roll away!
The titanium body thread does occasionally feel like it wants to eat into the Ultem cap thread, but I have learned to do the unscrew-click-screw sequence when attempting to close up the pen.
At the time I ordered it, I was considering getting a replacement nib in 14K or 18K gold later on. However, after I wrote with it for a while, I was left with the feeling that I would miss the nib if I did replace it. Using it with Diamine Presidential Blue ink, I could only feel the smallest hint of feedback, I was honestly amazed. The fact that it’s equally as smooth a writer with the nib placed upside down is a big bonus, as that means I have access to both a Fine and an Extra-Fine tip on the same pen.
Writing with this Fine nib doesn’t feel stiff, but the line thickness variation with pressure isn’t that noticeable either. Not necessarily a bad thing - it’s otherwise a very consistent writer, hasn’t skipped on me once.
It’s worth noting that this pen isn’t that friendly with narrower-necked ink bottles such as the Diamine 30ml ones. Best to use 50ml+ bottles, or an ink reservoir such as the one from Sailor, to fill this pen without making an inky mess on your table and hands.
Overall a very unique fountain pen with sturdy joints in all the right places. I don’t have a Pilot Custom 823 to compare it to yet, but considering the price and materials, the 823 looks to have some truly healthy competition in the Ultemate Vac.

I'm glad I got the medium nib. It is a wet writer and if I had gotten a broad which I prefer, it would be bleeding through paper and I use a 28lb paper. It is smooth for a medium relative to a broad. The ink capacity is a big deal as I tend to write a lot. The size, feel, etc. are excellent; the lack of a clip isn't a big deal for me but I am careful not to let it roll. I prefer bigger pens and this fits my ideals. The only negative was the $65 US import duties I had to pay, but that is not a reflection on this pen. Between conversion from Euros to Dollars and the import duties, it is nearly a $400 pen. I'm not saying it isn't worth it, but something that came as a surprise and that amount should be taken into consideration when making the purchase decision.

Received my GRAVITAS - ULTEMATE VAC ULTEM quickly and it works great. This and the acrylic quickly became my two most favorite pens. The pen was set up to perfection and it arrived in about 5 days!

How many pocket pens are equipped with an ebonite feed? I don´t know, but this one is--and from what I´ve experienced recently with other pens and a difficult ink (dry!) it is essential to me, that a fountain pen indeed comes with an ebonite feed! And look at this: isn´t this red Nikko ebonite beautiful?
And the rest of the pen is beautifil as well: that carbon fibre body looks posh and gives this seemingly small buddy essential weight you wouldn´t expect when you merely look at it. And of course: when in use the pen is a full-size pen.
The heart of the pen: nib and feed are indeed wonderful: the nib (M size) is wet but not a gusher (I can´t abide gushers).
Now a note about Emy from Pen-Venture: He always strives to make us, his customers, happy; it´s always a pleasure to shop at his fine company!

I saw Emy's review on the website and was impressed. I have several Gravitas fountain pens, but none with an ebonite ink feed. I bought it in black with a broad nib. Emy wrote to me, that he had tested the nib before. The innovative filling system with the large ink capacity blew me away. It writes beautifully, smoothly, and wet – a real pleasure. Emy, thank you and Penventure for the brilliant service and fast delivery. I absolutely recommend it.

Emy put special effort into obtaining the nib I wanted before sending the Carene to me. The pen arrived quickly even though it was sent to the far side of the world. It was exactly what I ordered and in perfect condition. thank you very much for your effort. Know it was appreciated.
The Carene writes extremely smoothly and produces a pleasantly wet line. This is an extremely comfortable pen that accommodates long writing sessions without fatigue. Waterman has delivered a beautiful pen that thoroughly deserved its long production run.
I highly recommend both Pen Venture for their service and the fountain pen.

This is a beautiful pen. Visconti hit it out the ballpark with this one. The acrosilk is stunning and the gold trim complements the resin perfectly. The pièce de résistance is the gold filigree around the ink window. The acrosilk has a somewhat matte feel, and is very comfortable in hand. Overall, I'd argue that this is a better pen than the Homosapiens. The nib writes wonderfully, no doubt due to Emy's personal touch.

Emy and the Pen Venture team once again demonstrated a level of service far and above what most other retailers provide. The pen was customized with my initials, a personal touch that Emy and team were not obligated to do, yet did anyway. A bottle of ink was even included. I am extremely pleased with my experience shopping at Pen Venture. You have made a customer for life!

Another home run from Gravitas. After enjoying my pen for a bit of time i can say that Titanium is the perfect weighted pen for me in the pocket size. I could go a bit heavier but i am very happy with my elegantly understated pen.
As always service and customer service was excellent when i had a question that needed to be answered. The whole experience was five star worthy. Thank you Pen Venture and Gravitas for my Crystalized Titanium Pocket Pen.

My new Carene arrived three days ago. This fountain pen writes beautifully. It is smooth and comfortable in the hand and looks very elegant. The quality of the manufacture is superb. The nib is very smooth and solid to write with.
Emy’s care and attention was greatly appreciated. He went to great lengths to ensure I was provided with exactly what I ordered. Delivery to the far side of the world was quick, efficient and secure.
I recommend both the fountain pen and Pen Venture to any prospective purchaser.