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Home Shop FP Bestsellers Gravitas - Quark Ultem Pocket Pen
GravitasSKU: GP-FP-QK-UT-1/YL-SN6

Gravitas - Quark Ultem Pocket Pen

€70,00 /
Tax not included. Shipping calculated at checkout.
5.0 (3 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Quark Ultem Pocket Pen
€70,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Introducing the Quark, a pocket fountain pen that redefines compact convenience without compromising on performance. ULTEM resin is a high performance polyetherimide thermoplastic (PEI) - used in the manufacturing process of circuit boards, sterilisation equipment and most notably in the making of aircraft parts, it offers high strength and stiffness, a broad chemical resistance, making it expensive and used for only high demanding applications.

Crafted to be the tiniest pen of its kind, the Quark transforms into a full-sized writing instrument when posted. Its lightweight design and ergonomically weighted section ensure a comfortable and effortless writing experience.

Featuring the new ACME double-start cap threads that offers a smoother capping and posting action, increase wear resistance and improved seal, the Quark effortlessly unveils its nib with just 0.6 turns. When posted, the cap securely threads onto the back in a mere 2 turns. The 22mm-long section, ranging from 9.85mm to 9.0mm in width, is precision-engineered from grade 5 material with micro-machined grooves and a bead-blasted finish.

Equipped with a Gravitas-production size 6 steel nib compatible with Jowo No. 6 threads and abs plastic feeder, the Quark offers versatile writing options, including Extra Fine, Fine, Medium, Broad and Fine Flex.

This pen is eye-dropper friendly, capable of holding up to 1.5ml of ink or a standard international ink cartridge. Every Quark includes a complimentary attachment, designed for conveniently securing your item to a lanyard or any carrying accessory, ensuring ease and comfort in your collection.

Elevate your writing experience with the Quark Pocket Pen – where compact meets functionality.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Yellow
- body material: Ultem 
- cap type: Screw-cap
- filling mechanism: Eyedropper / Standard International Cartridge
- nib material: Steel
- nib size: Extra Fine, Fine, Medium, Broad, Fine Flex
- postable: Yes (screw to post)
- trim: Silver color
- length overall (closed): 85 mm.
- length overall (posted): 134 mm.
- body length: 82 mm.
- cap length: 58 mm.
- body diameter: 9,8 mm.
- cap diameter (without clip): 11 mm.
- weight (overall): 9 grams.
- body weight: 6,5 grams.
- cap weight: 2,5 grams.

Specifications

Brand: Gravitas
Model: Quark
Edition:
Color: Yellow
Body Material: Ultem
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Only
Postable:
Yes
Trim Color:
Length Overall (Closed): 85 mm
Length Overall (Posted): 134 mm
Body Length (Uncapped):
82 mm
Body Diameter: 9.8 mm
Cap Diameter (Without Clip): 11 mm
Weight Overall: 9 g
Body Weight: 6.5 g

Customer Reviews

Based on 3 reviews
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P
Philip M Stevens
Delightful little pocket pen

I bought this as I have the Namisu Pocket Nova in ultem and wanted something thinner but with a #6nib. This pen fit perfectly, now may need to get more nibs for it, and possibly a second one.

E
Erik F.
The greatest pocket pen ever!

This is my favorite pocket pen there is. Super small when capped but extends to a great length for even long writing sessions. Feather light in your hand and glassy smooth with delicate, yet stirdy threads. The nib is also excellent, smooth writing that isn't too wet with a lot of spring to it.

w
william pemberton
a great addition to the quark line

There are two primary differences from the previous version. The threads have been upgraded to the Acme style, which makes capping and posting much faster and easier.. The second change is that the material is shinier. This is a great pocket pen.

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© 2026 Pen Venture - Passion Virtuous,

Review picture
Isaac Leong
My wonderful first Titan pen

Beautiful colour. The nib is smooth and wet. The grip section is textured, I will not worry about writing with it in hot weather. This is my first demonstrator pen, I love watching the ink level drops (very slowly) in the barrel. The package is packed very securely. Thank you staffs at Pen Venture.

Fifty4T - Titan Slim Line Aluminium Emerald Shadow
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877 reviews
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R
Gravitas - Vac 2.0 Aluminium | Black
Richard L Sherman
Gravitas Vac 2

The construction of the Vac 2 is flawless. The textures of the materials and it's simple lines display an elegant beauty. The large steel nib delivers a pleasant writing experience and also provides a bit of flex.

C
Gravitas - Vac 2.0 Aluminium | Black
Chris

Amazing Pen! Gravitas makes one of the best piston fillers out there. I dont keep the nib and normally use the pen for coustom flex nibs with Jowo #6 compatible nib units. So, i really cant speak on the nib. However, this pen is just built with high quality components. The weight, feel, and overall aesthetics are unmatched. You wont find better at this price point.

R
Platinum - #3776 Century Kaga Maki-e Sansui GT
Robert Moore
Platinum Sansui - Smooth Operator

I recently acquired the Platinum Maki-e Sansui pen in a Medium nib. The Pen Venture team was kind enough to carefully inspect and tune this pen before sending it on to me. Many thanks for that. It writes very smoothly and with a steady flow of ink. The Medium nib is my favorite nib configuration from the Platinum brand. The line width is nice and thin and always writes consistently right of the box. This lovely Maki-e pen was no different. I highly recommend it.

D
Gravitas - Steel Nib Unit Silver | No. 6
David Sumrell
Gravitas #6 extra fine nib

The extra fine nib came tuned to perfection—a joy to write with. Thank you Emy!

J
Gravitas - Vac 2.0 Aluminium | Black
Jimmie
FANTASTIC!

The VAC 2.0 is a great improvement to an already great pen (the original VAC Ultem). The weight and balance are spot on. The cap and the new threads engage without hesitation. No missed closures and the cap has a nice stop when threading back on. It posts securely without issue. Filling with the Kraken system is easy. I got a medium nib and it is smoooooooth. Mine is on par with my 823 medium nib The smoothness, wetness and bounce would make you think it's a gold nib. Line width is slightly narrower than the 823 medium. The pen feels solid and well built. I'm not worried about this one getting knocked around. Overall a great pen. Shipping from Pen-Venture to Colorado was five days! Great pen and service all around!

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