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Description
S.T. Dupont Diamond Guilloche Fountain Pen - RubyWe are delighted to announce the launch of the highly anticipated S. T. Dupont 'Diamond Guilloche' collection for 2020, a luxurious series of fine writing instruments created exclusively for the US market. This new collection combines old world Dupont glamour with an updated modern design. S. T. Dupont brings together one of their oldest and most treasured crafting techniques 'guilloche under lacquer' to the newly updated large size 'Line D'.
We are delighted to announce the launch of the highly anticipated S.T. Dupont 'Diamond Guilloche' collection for 2020, a luxurious series of fine writing instruments created exclusively for the US market.
This new collection combines old world Dupont glamour with an updated modern design. S.T. Dupont brings together one of their oldest and most treasured crafting techniques 'guilloche under lacquer' to the newly updated large size 'Line D'. Available in 3 vibrant colors: Ruby, Sapphire and Aquamarine, the pens combine the skills of the S.T. Dupont master goldsmith with the expertise of their master lacquerer.
Diamond 'Guilloche'
The 'Diamond Guilloche' collection features the namesake technique that is French for "engine turning." The diamond design is created by an engine turning process that engraves very precise, intricate, geometric patterns into an underlying material. For this latest launch, S.T. Dupont selected a finely detailed diamond pattern which is then overlaid with sumptuously colored Urushi lacquer, the result is simply spectacular.
Urushi Lacquer
S.T. Dupont's artisans add layers of natural lacquer to the surface of the diamond patterned guilloche in a months long process involving many applications and polishing to impart depth and mystery to each finish. The engraving causes the reflection of light through the overlay of natural Urushi lacquer creating a stunning display of light and color.
Line D Large
The collection is launched on the newly updated Line D Large pen; recently remodeled with a new bold blazon on the articulated clip, an enhanced Dupont 'D' in the crown of the cap and a perfectly balanced shape for exceptional writing. The pen cap closes with Dupont's iconic 'cling' and features a fluted grip section for a superb writing experience.
Nib Material: 14k Gold
Filling Mechanism: Cartridge, Converter
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Product Reviews
★★★★★ 4
Airflow
A very nice sturdy and colorful filter. The only drawback I have is I think the carbon medium is so thick that it does restricts the airflow a bit. I do notice the air is filtered better than my previous filter, which is why I am keeping it.
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Reviewed in the United States on June 10, 2025
★★★★★ 5
Outstanding Performance, Minimal Installation Guidance Needed
I am delighted to award five stars to the cabin air filter with activated charcoal for my 2022 Chevrolet Tahoe Z71. Installation was a breeze, and it fits my vehicle perfectly. The activated charcoal feature is incredibly effective in eliminating odors and enhancing air quality within the cabin.
While the absence of written instructions was a minor inconvenience, a quick reference to the item listing on Amazon provided the necessary guidance for installation. Once in place, the filter performed admirably, ensuring a clean and fresh interior environment.
Overall, I wholeheartedly recommend this product to anyone seeking to upgrade their car’s air filtration system. Its exceptional performance and ease of installation make it a standout choice. Five stars without a doubt.
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Reviewed in the United States on March 5, 2024
★★★★★ 5
As advertised
Perfect fit in my 2015 F150.
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Reviewed in the United States on February 28, 2026
★★★★★ 1
Too restrictive!
If you like air flow do not buy this filter. I put it in my 2020 Super duty and had very little air coming out with the fan as high as it would go. Stopped and bought the standard Microguard from Orielly's. I changed it in the parking lot and Bam!!! back to blowing my hat off!
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Reviewed in the United States on May 5, 2026
★★★★★ 5
IMPRESSED!
Item Package Quantity: 1, Item Package Quantity: 1
I bought this for my Honda civic 2017 lx 1.5 and it is a perfect fit. I didn’t realize how important it is to change it. Let me tell you if you are thinking about buying this, it’s your sign not JUST because of health which is vital and first and foremost but the PRICE! At any oil change or auto shop they will charge no less than 50$ and I’ve seen higher. I will continue to buy this brand. I will update in my next 5,000 miles. 8.00$ or 50$+ and the quality is EXACTLY the same, your choice.
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Reviewed in the United States on April 3, 2026