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Product Reviews

Product

Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle
Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle

Author: AW

One of my favourite teal/turquoise shades

  • Review Add on: 08-06-2026
  • Average Rating: (5)

I own more tealish and turquoise-y inks than I'd ever admit, and this one is one of the most beautiful to date.

All Ratings

  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Product

Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle
Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle
Verified

Author: Dorin Pirvu

ERFECT darker turquoise

  • Review Add on: 12-02-2026
  • Average Rating: (5)

I though this would be very close to other RO inks, and it is! But it's also THE PERFECT darker turquoise (not yet teal, and not too leaning green). Have to compare it to Tranquility

All Ratings

  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Product

Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle
Robert Oster Signature Dutch Pen Show 2025 Waterworld Exclusive Ink Bottle

Author: Sandra

A new favorite ink

  • Review Add on: 22-11-2025
  • Average Rating: (5)

Robert Oster "Waterworld" is a vibrant tealish turquoise or a turquoise-leaning teal. It's well-behaved and beautiful.

All Ratings

  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)
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