Experience the poetic metamorphosis of traditional iron gall ink with Platinum Classic Fountain Pen Ink in Cassis Black. Manufactured in Japan by Platinum Pen Co., Ltd.—the only remaining pen maker in Japan that continues to craft iron gall inks using traditional methods—this specialty ink offers an extraordinary writing experience that evolves over time directly on the page.
When first applied to paper, Cassis Black flows with a rich, vibrant berry-magenta hue. As the ink dries and oxidizes with exposure to air, the colour gradually darkens and transforms into a deep, moody black-crimson. Beyond its mesmerizing colour-shifting process, this traditional formula creates dramatic shading that highlights every stroke of your fountain pen nib. Once fully oxidized, the ink develops exceptional water resistance and archival permanent properties, making it ideal for important documents, signature signing, and long-term daily journaling.
Packaged in a substantial 60 ml cube glass bottle with an internal reservoir insert for clean, easy nib filling, Cassis Black brings timeless Japanese ink craftsmanship to your desk.
Maintenance Tip: Due to the traditional iron gall formulation, regular cleaning and flushing of your fountain pen every 4–6 weeks is recommended.
- Volume: 60ml
- Bottle Size: 5.7 x 5.7 x 6.3 cm
- Water-based dye ink
- Made in Japan
*The colours in the photos might have a slight difference from the real colours.
【ABOUT THE BRAND】
Founded in 1919 in Tokyo, Japan, Platinum Pen Co., Ltd. is renowned for its pioneering innovations in writing instruments, including the world's first cartridge-type fountain pen introduced in 1956. Known for blending tradition with cutting-edge technology, Platinum offers a diverse range of high-quality products, such as the iconic 3776 fountain pen, the luxurious Izumo series, and precision-crafted ballpoint and rollerball pens. With over a century of expertise, Platinum continues to redefine the art of fine writing.
