on saleDiplomat Viper Fountain Pen - Blue

Product Code DP-D41302023

In Stock

out of stock

on saleDiplomat Viper Fountain Pen - Blue

Product Code DP-D41302023

In Stock

out of stock

$96.00

MSRP $120.00

Color:
Blue
Nib Guide

Not sure which size nib is best for you?

Try our Nib Nook tool to view and compare nib widths using our writing samples. Learn more ›

The Diplomat Viper writing collection features a fully engraved body, with intricate patterns reminiscent of a reptile's scaled skin, giving it a distinct and captivating look. The pen’s streamlined form is complemented by a precisely engineered nib, designed to offer a smooth and effortless writing experience. 

This blue chiseled metal fountain pen also has a satisfying soft sliding magnetic cap with matching blue trim. The hooded stainless steel nib comes in size Fine/Medium, and the pen fills via standard international cartridge/converter (both are included).

Despite its premium appearance, the Diplomat Viper is designed to offer exceptional value for a controlled budget, making it accessible to both pen enthusiasts and professionals seeking a high-quality tool.

Click to shop all compatible short or long standard international ink cartridges.

Condition
New
Brand
Diplomat
Type
Fountain Pens
Color
Blue
Demonstrator

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

No
Body Material
Metal
Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Magnetic cap
Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled ink, Standard international short ink cartridges, Standard international long ink cartridges
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Cartridge, Converter
Grip Material
Metal
Nib Size
Fine Medium
Nib Color
Silver
Nib Material
Steel
Postable

Whether or not the cap fits securely onto the back of the barrel when open.

No
Retractable

Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

No
Diameter - Body
12.5mm (0.49in)
Diameter - Cap (without clip)
13.1mm (0.52in)
Diameter - Cap (with clip)
15.3mm (0.60in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

9.5mm
Length - Body

The measurement from the back end of the barrel to the tip of the nib.

127.6mm (5.02in)
Length - Cap
56.3mm (2.22in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

3.0mm (0.12in)
Length - Overall (Closed)
140.0mm (5.51in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

147.4mm (5.80in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

21g (0.74oz)
Weight - Cap
9g (0.32oz)
Weight - Overall (g)
30.0g
Max Ink Capacity - Cartridge

The maximum volume of ink that can fit in the pen when using a cartridge.

1.70ml
Max Ink Capacity - Converter

The maximum volume of ink that can fit in the pen when using a converter.

0.90ml

Customer Reviews

Based on 6 reviews
67%
(4)
33%
(2)
0%
(0)
0%
(0)
0%
(0)
S
Syed A.
Great pen quick service

Goulet pens always has a great selection, smooth shopping experience, and prompt delivery, and this order was no different. The pen's exterior scaling is as detailed as it appears on the picture which is both aesthetic and functional. The cap is magnetic and locks well. The length of the pen is good where you can write comfortably without posting. Overall a great experience.

D
Delma M.
Easily new favorite pen

Smooth writer, the texture is very stimulating.

P
Pete B.
Diplomat Viper Fountain Pen - Blue?

Love this pen . I have one Blue and one Black for the ink. the magnetic cap is very convenient. Last but not least - Very ****

P
Pat O.
Diplomat Viper Fountain Pen - Blue

Love the pen. Magnetic cap is nice feature. Pen writes smoothly and doesn't dry out over a week of nonuse. Reverse writing also fairly smooth and consistent. The included ink is a nice blue-black. This is a very nice daily use pen at a great price.
Patrick

D
Destiny S.
Nothing to Write Home About

It says “DIPLOMAT” on the pen, but it doesn’t feel like my other Diplomat fountain pens. There’s more “feedback” than what I get from its stable mates in my collection, and the nib is stiff with very little line variation. The loupe -aided visual inspection of the nib reveals no misalignment or burrs on the nib, but my entry-level Magnum feels nicer to write with. It’s perfectly usable as is, but I hope it’ll get smoother with more use.
Fit and finish is very good, no scratches or scuff marks on the anodized finish. The grip is aluminum, as is the rest of the pen, but it’s pleasant to hold. The anodized finish provides enough grip to keep your fingers in place.
The only two parts that are not anodized are the hooded nib, and a chrome ring on the body, which contains the magnets. The magnets are quite strong, and keep the cap in place. After not writing with it for a couple of days, the first couple of words worth of ink comes out fairly dark and concentrated, but it has always written from the first stroke.

Frequently Asked Questions

How do I use this pen with ink cartridges? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

A cartridge is small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write!

This pen uses standard international ink cartridges, a common size which is available in many colors from various brands.

You can learn more about how to actually install an ink cartridge on our blog, or in this video tutorial:

How do I use a converter? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

A converter goes in the place of where the ink cartridge would normally go. From there, you can fill your fountain pen from bottled ink.

A converter is a detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter.

We have a great video showing how to use a converter here:

How do I clean this fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It mostly comes down to flushing out the pen with water, and sometimes a little bit of pen flush if the ink is really stuck. 

We put together a blog post with step-by-step instructions, or you can watch the video here:

We recommend a good cleaning every 2 weeks, and any time you change ink colors. Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

For even more information about fountain pen cleaning, check out our Fountain Pen 101 video blog post.

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We accept returns for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.