Robert Oster Inks

Once in a blue moon, you might come across a subtle shimmer fountain pen ink. It might seem like an oxymoron, but with Oster's Blue Moon ink that's...

Robert Oster Lake of Fire is a deep blue fountain pen ink with a slight green undertone, medium shading, and medium pink sheen. It dries in 40 seco...

Robert Oster Blue Sea is a gorgeous medium blue with medium shading and medium pink sheen. It dries in 20 seconds in a medium nib on Rhodia and has...

Steely, cool blue fountain pen ink inspired by the winter snow and Lake Michigan to represent Chicago, Illinois. Following the success of their ex...

Robert Oster Sepia Nights is a dark brown fountain pen ink with a slight red undertone, medium shading, and medium pink sheen. It dries in 30 secon...

You've heard of blue-black, now get ready for Black N Blue: A rich black fountain pen ink with blue shimmer. Robert Oster Black ‘N’ Blue from the ...

Robert Oster Blue Black is a dark blue black fountain pen ink with a purple undertone, low shading, and low copper sheen. It dries in 20 seconds in...

Robert Oster Shake & Shimmer - Blue Velvet Storm Robert Oster Blue Velvet Storm from the Shake ‘N’ Shimmy collection is a dark petrol teal wi...

Ten Dollar Blue by Robert Oster Let your jottings become creative expressions with this impressive Signature fountain pen ink. Robert Oster Signatu...

Robert Oster Marine is a medium teal-green fountain pen ink with medium shading and medium pink sheen. It dries in 20 seconds in a medium nib on Rh...

Robert Oster Aqua is a beautiful blue-teal fountain pen ink with high shading and medium pink sheen. It dries in 30 seconds in a medium nib on Rhod...

This color is a smokey denim blue, almost a dark teal, that takes on a lot of different colors in its shading. It can even sheen with a bit of rose...

Robert Oster True Blue is a dark blue fountain pen ink with medium shading and medium pink sheen. It dries in 15 seconds in a medium nib on Rhodia ...