Diamine and Sailor are two of the most respected names in quality fountain pen ink. Both brands offer exceptional color selections, reliable performance, and devoted followings among fountain pen enthusiasts. However, they approach ink design differently. Diamine is known for its massive color catalog, outstanding value, and wide range of specialty inks, while Sailor is celebrated for sophisticated color development, remarkable shading, and premium Japanese ink craftsmanship.
If you're deciding between Diamine and Sailor fountain pen inks, this guide compares color selection, writing performance, shading, sheen, dry time, value, and overall writing experience.
Diamine vs Sailor Ink at a Glance
| Feature | Diamine Ink | Sailor Ink |
|---|---|---|
| Country | United Kingdom | Japan |
| Founded | 1864 | 1911 |
| Color Selection | Exceptional | Excellent |
| Shading | Excellent | Outstanding |
| Sheen | Excellent | Excellent |
| Flow | Moderate to Wet | Moderate to Wet |
| Value | Outstanding | Premium |
| Best Known For | Color Variety | Complex Colors & Shading |
Diamine Fountain Pen Ink Overview
Diamine is one of the oldest and most respected ink manufacturers in the world. Founded in England in 1864, Diamine has built a reputation for producing high-quality fountain pen inks in an enormous variety of colors.
Popular Diamine collections include:
- Diamine Standard Inks
- Diamine Inkvent Collection
- Diamine Shimmer Inks
- Diamine 160th Anniversary Series
- Diamine Forever Ink
Diamine is frequently recommended in our guide to Best Fountain Pen Ink Brands. Shop all Diamine fountain pen inks.
Sailor Fountain Pen Ink Overview
Sailor is one of Japan's most respected fountain pen manufacturers and produces some of the most admired fountain pen inks available today. Sailor inks are known for their sophisticated colors, strong shading characteristics, and exceptional consistency.
Popular Sailor collections include:
Sailor inks are often favored by fountain pen enthusiasts seeking unique colors and expressive writing characteristics. Learn more about the Sailor brand.
Color Selection: Which Brand Offers More Choices?
This is one area where Diamine clearly has the advantage.
Diamine offers one of the largest fountain pen ink catalogs in the industry, with hundreds of colors available across multiple collections.
Sailor focuses on carefully curated color collections that emphasize color complexity, shading, and artistic expression.
| Color Category | Diamine | Sailor |
|---|---|---|
| Blue Inks | Outstanding | Excellent |
| Black Inks | Excellent | Excellent |
| Green Inks | Excellent | Excellent |
| Purple Inks | Excellent | Excellent |
| Specialty Colors | Outstanding | Outstanding |
For help selecting colors, visit our Fountain Pen Ink Color Guide and Best Fountain Pen Ink Colors.
Writing Performance and Flow
Both brands perform exceptionally well in fountain pens, but their writing characteristics differ slightly.
Diamine inks are generally reliable, consistent, and available in a wide variety of flow characteristics depending on the specific color.
Sailor inks often feel slightly more refined and controlled, especially within collections like Manyo and Ink Studio.
Learn more about flow characteristics in our guide to Wet vs Dry Fountain Pen Inks.
| Writing Characteristic | Diamine | Sailor |
|---|---|---|
| Flow | Moderate to Wet | Moderate to Wet |
| Lubrication | Very Good | Excellent |
| Smoothness | Excellent | Excellent |
| Consistency | Excellent | Excellent |
Shading Comparison
Shading is one area where Sailor has earned a legendary reputation.
Many Sailor inks are specifically designed to showcase dramatic color variation and shading, particularly within the Manyo and Ink Studio collections.
Diamine also offers excellent shading inks, especially in colors such as Earl Grey, Ancient Copper, and several Inkvent releases.
Related guide:
| Shading Category | Diamine | Sailor |
|---|---|---|
| Subtle Shading | Excellent | Excellent |
| Dramatic Shading | Very Good | Outstanding |
| Color Complexity | Excellent | Outstanding |
Sheen and Specialty Effects
Both brands offer impressive sheen potential.
Diamine is particularly well known for heavily sheening inks and specialty releases from the Inkvent series.
Sailor often produces more subtle and sophisticated sheen effects that complement shading characteristics.
Related resources:
Dry Time Comparison
Dry times vary significantly depending on the color, nib size, and paper. In general, both brands perform similarly, although highly saturated Sailor colors may occasionally require slightly longer drying times.
For additional information, see our Fountain Pen Ink Dry Time Guide.
Dye vs Pigment Considerations
Most Diamine and Sailor fountain pen inks are dye-based formulations designed to maximize color, shading, and writing performance.
If you require waterproof or archival writing, consider permanent or pigment-based inks instead.
Learn more in our guide to Dye vs Pigment Fountain Pen Ink.
Best Diamine Inks
- Diamine Oxford Blue
- Diamine Writer's Blood
- Diamine Earl Grey
- Diamine Oxblood
- Diamine Aurora Borealis
Best Sailor Inks
- Sailor Manyo Haha
- Sailor Manyo Yomogi
- Sailor Shikiori Yamadori
- Sailor Ink Studio 123
- Sailor Yurameku Kyokkou
Value Comparison
Diamine is widely considered one of the best values in fountain pen ink. It offers excellent performance, large bottle options, and a massive color selection at affordable prices.
Sailor inks are generally positioned as premium products and often command higher prices because of their specialized formulations and unique color development.
| Value Category | Diamine | Sailor |
|---|---|---|
| Price | Lower | Higher |
| Color Selection | Outstanding | Excellent |
| Writing Performance | Excellent | Excellent |
| Overall Value | Outstanding | Very Good |
Who Should Buy Diamine Ink?
- Writers seeking maximum color variety
- Students and everyday writers
- Users looking for excellent value
- Ink collectors
- Writers who enjoy experimenting with colors
Who Should Buy Sailor Ink?
- Fountain pen enthusiasts
- Journalers
- Artists
- Writers who love shading inks
- Users seeking unique colors and premium formulations
Final Verdict: Diamine vs Sailor Ink
Both brands are among the best fountain pen ink manufacturers available today.
- Choose Diamine if you want exceptional value, one of the largest color selections in the industry, and dependable everyday performance.
- Choose Sailor if you want sophisticated color development, remarkable shading, and a premium Japanese ink experience.
Many fountain pen enthusiasts keep inks from both brands because they excel in different areas and complement each other extremely well.
Related Fountain Pen Ink Comparisons
- Diamine Ink vs Pilot Iroshizuku Ink
- Sailor Ink vs Pilot Iroshizuku Ink
- Sailor Manyo vs Pilot Iroshizuku Ink
- Diamine Ink vs Ferris Wheel Press Ink
- J. Herbin vs Jacques Herbin Ink
- Best Fountain Pen Ink Brands
Frequently Asked Questions
Is Diamine ink better than Sailor ink?
Neither brand is universally better. Diamine offers more colors and excellent value, while Sailor is known for sophisticated color development, exceptional shading, and premium writing performance.
Which brand has better shading, Diamine or Sailor?
Both brands offer excellent shading inks, but Sailor is particularly famous for dramatic shading and complex color variation in collections such as Manyo and Ink Studio.
Which brand offers more fountain pen ink colors?
Diamine offers significantly more fountain pen ink colors and one of the largest ink catalogs available from any manufacturer.
Is Sailor ink worth the higher price?
Many fountain pen enthusiasts believe Sailor inks are worth the premium price because of their unique colors, remarkable shading characteristics, and exceptional overall quality.
