Pens
Authorised Platinum Retailer
Platinum Curidas Fountain Pen
Colour: Blue
· Ref: PKN-7000-50-EF
£61
VAT incl.
Pay in 3 interest-free payments of £20.33 with
.
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Colour: Blue
Authenticity
Authorized Platinum dealer
Warranty
Official Platinum warranty
Shipping
DHL Express - with tracking
Returns
30 days from delivery
Overview
Platinum’s Curidas Abyss Blue fountain pen shows its retractable mechanism through translucent blue resin, making its inner workings part of the design.
The mechanism is part of what you see through the translucent PMMA resin. Curidas takes its name from kuridasu, the Japanese term for extending the writing tip, and “curiosity.” Watching the parts move brings that idea to life. Platinum’s Knock introduced the retractable design in 1965, and Curidas returned to the idea in 2020.
Press the rear button to extend the stainless steel nib, then press again to retract it. At rest, the nib sits inside the Nib Pocket, where a lid and soft elastomer seal limit moisture loss in the small chamber.
Use Platinum SPSQ-400 or SPN-100A cartridges, or fill from a bottle with Converter 700A or 500A, sold separately. One blue-black cartridge is included. The box also contains a tool for attaching or removing the chrome-plated spring-steel clip.
Made in Japan, the pen measures 153 mm in length and 13.8 mm in maximum diameter, and weighs 24.0 g.
At a glance
- Translucent Abyss Blue
- Push-button retractable mechanism
- Nib Pocket sealing chamber
- Stainless steel nib
- Cartridge or converter filling
- Removable clip and clip tool
Specs
Body
Finish
Translucent Abyss Blue
Material
PMMA resin
Color
Blue
Clip
Chrome-plated spring steel; removable with clip tool
Nib
Material
Stainless steel
Mechanism
System
Push-button retractable
Seal
Nib Pocket with soft seal
General
Country of manufacture
Japan
Product
Collection
Curidas
Reference
PKN-7000-50
Filling
System
Cartridge / Converter
Compatible converters
Converter 700A / Converter 500A; sold separately
Compatible cartridges
SPSQ-400 / SPN-100A
Dimensions
Full length
153 mm
Maximum diameter
13.8 mm
Weight
Total
24.0 g
Included items
Cartridge
One blue-black cartridge
Tool
Clip tool
Questions & Answers
How does Curidas work without a separate cap?
Press the rear button to extend the nib and again to retract it. The retracted nib sits inside the Nib Pocket, whose lid and soft elastomer seal limit moisture loss.
Which cartridges and converters fit?
Platinum SPSQ-400 and SPN-100A cartridges are compatible. For bottled ink, use Converter 700A or 500A, sold separately.
Can I remove the clip?
Yes. The included tool lets you attach or remove the chrome-plated spring-steel clip. One blue-black cartridge is also supplied.
What does Curidas mean?
It combines kuridasu, a Japanese term for extending the writing tip, with “curiosity.” The translucent body lets you watch the retractable mechanism at work.
Still have questions?
Talk to a specialist
Verified Reviews
FAQ
Yes, we are an Official Platinum Authorised Dealer, and an authorised dealer for every brand we carry.
With over 15 years in the luxury market, we guarantee the authenticity and quality of every piece we sell.
Your order arrives brand new in its original Platinum packaging, with all official documentation and the Platinum warranty card, stamped and dated by us.
The warranty covers manufacturing defects. It doesn't cover normal wear and tear or accidental damage — and on watches, it doesn't cover straps, bracelets, or batteries.
Questions about a specific piece? Our specialists are happy to help. [Contact our team →]
Questions about a specific piece? Our specialists are happy to help.
Yes — free DHL Express shipping on all UK orders of £400 or more.
- Orders from £150 to £399.99 ship DHL Express for a flat £9.90
- Orders under £150 ship DHL Express for a flat £19.90
Every order ships with a tracking number, so you can follow your package every step of the way. Shipments are fully insured and delivered by DHL Express with signature required.
Most in-stock orders arrive within 1-2 working days of dispatch.
No — the price you see at checkout is the price you pay.
Our prices include VAT, and nothing is added beyond the delivery charge shown.
DHL will never ask you for a payment on delivery, and no surprise invoice arrives afterward.
No handling charges, no processing fees, nothing added at the door.
We accept all major credit and debit cards, Apple Pay, Google Pay, PayPal, and bank transfer.
- Credit and debit cards — Visa, Mastercard, American Express
- Apple Pay and Google Pay — one-tap checkout, nothing to type
- PayPal — with PayPal Buyer Protection on every purchase
- Bank transfer — often the preference on higher-value orders
Every transaction is fully encrypted, and we never store your card details.
Paying in instalments. Choose PayPal at checkout and you may be offered the option to spread the cost, including interest-free plans on qualifying orders. Plans, terms and eligibility are set by PayPal and shown before you confirm, with no obligation.
Paying by wire, or buying more than one piece? [Contact our team →] and we'll take care of you personally.
You'll find availability on every product page, right above the Add to Cart button. Here's what each status means:
"Dispatched next working day" or "Only 1 left" — the piece is in our warehouse and leaves the working day after you order.
"Dispatched within X working days" — the piece is held at our secondary warehouse. We allow a few days to inspect and authenticate it before dispatch.
"Check delivery date" — the piece is available to order, but we confirm the exact date with the brand. As soon as you order, we contact the manufacturer and email you an estimated date.
Need something by a specific date? Tell us and we'll check before you buy. [Contact our team →]
You have 30 days from delivery to return your order.
How returns work. Just let us know and we'll email you a prepaid DHL Express return label — you never have to arrange a shipment or pay anything up front. The return cost is deducted from your refund. If the piece arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
- Credit (issued as a gift card) — processed almost immediately once your return reaches us
- Refund to your original payment method — typically 5–10 working days, depending on your bank
To qualify for a full refund, the piece must:
- Be unused and in perfect condition, with no signs of wear
- Include its original packaging and outer box
- Include all original documentation, accessories, and the warranty card
- Not be engraved or personalised — custom pieces are made to order and can't be returned
Not sure whether something qualifies? Ask us before you ship it back — we'll tell you straight. Contact our team.
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