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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.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
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★★★★★ 5
Does the job at half the price
No problem at all
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Reviewed in the United States on May 7, 2026
★★★★★ 4
Good Air Filter
After Honda service dealership quoted over $120 for both engine and cabin air filter replacement, I thought it was just ridiculous and wanted to try out installing them myself. This engine air filter fit perfectly for my Honda 2015 Accord, and was easy to install. Quick 15 mins saved me over $100 and I can't be more happy. Definitely recommend this.
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Reviewed in the United States on January 5, 2023
★★★★★ 5
Fit was perfect no issues.
Easy to change. Fit perfectly no issues.
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Reviewed in the United States on September 24, 2025
★★★★★ 5
Nice product
Nice one
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Reviewed in the United States on March 14, 2026
★★★★★ 5
Just what I needed
Works perfectly!
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Reviewed in the United States on February 15, 2026