To mark the 60th anniversary of Platinum Pen’s very first retractable fountain pen released in 1965, we are proud to introduce a special edition of the CURIDAS, themed around gemstones.In 2020, 55 years after the original, the retractable fountain pen made a comeback as “CURIDAS,” earning praise forits innovative design. Now, this commemorative model debuts in three limited-edition colors inspired by themysterious allure of gemstones and power stones. The shimmering brilliance of precious gems is captured through an iridescent pearl finish that changes color depending on the angle and lighting — creating a dynamic, multi-faceted appearance.Designed with writing comfort in mind, CURIDAS features a nib length optimized for clear visibility on the page and a compact clip for better grip flexibility. It’s the perfect choice for active users, addressing a common issue with capped pens — difficulty opening the cap with one hand.

•Special sealing ensures the nib stays wet and ready to write instantly, anytime.

•Compatible with converters, so you can use your favorite bottled inks just like with traditional fountain pens.

Product name：Fountain pen

Product number：PKN-9000

Barrel color：#28 Iolite (Violet)・#41 Sphene (Green)・#57 Labradorite (Blue)

Pen nib：Fine・Medium

Size：153mm (full length) x 13.8mm (max. diameter); weight : 24.1g

Material：

Screw : Chrome plating on brass

Push button, Taper : PMMA resin. Barrel, Front barrel : Deflected pearl coating on ABS resin.

Pen nib : Stainless steel

Clip : Chrome plating on spring steel

The multi-chromatic coating shifts dramatically with the angle of view and light, offering a magical, ever-changing display of color.

The size of the nib pocket is minimized in order to prevent moisture of the ink from evaporating. Also, the soft material used for sealing improves airtightness.

The long nib makes it easier to see the face of the paper when writing. The position of the clip allows more flexibility for a comfortable gripping.

The multi-chromatic coating shifts dramatically with the angle of view and light, offering a magical, ever-changing display of color.

Our first retractable fountain pen, the “Platinum Knock”, was released in 1965.