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The Platinum Curidas Sphene Fountain Pen is celebrates the 60th anniversary of Platinum’s first knock-type fountain pen from 1965. This limited edition blends heritage and modernity, with a design inspired by the charm of gemstones. The Sphene color showcases a vivid green shade with an iridescent pearl finish that shifts with light and angle, creating a natural and dynamic effect. Every detail is designed for writing comfort: the elongated stainless steel nib ensures excellent visibility on the page, while the compact clip allows a flexible, natural grip. Thanks to the retractable system, the pen is always ready to write, eliminating the need for a cap and allowing you to open and close it with one hand. A special airtight structure keeps the nib sealed, preventing ink evaporation and maintaining a smooth flow even after long pauses. The Curidas Sphene fills with Platinum proprietary cartridges or converter. Limited to just 3,000 pieces worldwide, this model is a true collector’s item and a perfect tool for writing enthusiasts.
In 1919, Shunichi Nakata, started his fountain pen business that would later be known as Platinum Fountain Pen Co. The Japanese brand is closely related to the legendary Nakaya fountain pen brand, where some of the finest fountain pens in the world are created. This expertise also goes into Platinum's own line of fine writing instruments.
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| Condition | New |
| Brand | Platinum |
| Brand Origin | Japan |
| Product Code | PKN900041F, PKN900041M |
| Type | Fountain Pen |
| Brand Colour | Sphene |
| Colour | Green |
| Body Material | Resin |
| Mechanism | Retractable |
| Cap Type | No Cap |
| Compatible Converter | Proprietory Converter |
| Filling Mechanism | Cartridge / Converter (Not Included) |
| Grip Material | Resin |
| Nib Size | Fine, Medium |
| Nib Colour | Silver |
| Nib Material | Steel |
| Postable | No |
| Trim | Chrome Plated |
| Diameter (MM) | 13.8 |
| Length - Closed (MM) | 153 |
| Weight (gms) | 24 |
| Warranty Info | 1 Year warranty Valid against manufacturing defect only |
| Package Content | 1 Fountain pen, 1 Cartridge, 1 Converter comes with a Platinum exclusive box. |
Necessary accessories for fountain pen
Loved it exceptional
The converter I received was quickly delivered and in perfect packaging. Tried it with parker qink bottle worked like a charm (better than parker converters)
Excellent
MantraOnline is the best place for buying fountain pens, accessories and stationery!
very good quality
I am mind blown by the sheer and well thought of design intricacies. Right from the retractable clip to the magnetic cap and balanced body to cap weight, the pen is a must have for all pen connoisseurs.
The pen writes flawlessly without any skips and is a wet writer.
Absolutely stunning!!!
The Leatherette Twelve Pen Case by Arista is a very beautifully made and high quality pen case. The case is robust and the partitions are well made and wide enough to hold all thick fountain pens. It's hard to find such a pen case at this price point and hence it's a very appropriate purchase.
The Pilot Metropolitan is the perfect first pen for any fountain pen beginner. I got this in M, and it writes very smooth. Will highly recommend the M nib for beginners. The pen came included with a converter, and I have been using the Parker Quink Black. Planning to order a wetter ink and mostly decided on the Pilot for this pen to increase the smoothness even more
Faber-Castell Piston Converter 148785
As expected, very smooth nib. Writes flawless. No skips. No tuning was necessary.
Good fast excellent services
Very good writing results.
Very good service, nice and original product, good packing and quality. I wish you and your team the best
Excellent service.


