Flash Sale Specials

Robert Oster Caffe Crema is a medium brown fountain pen ink, the color of coffee and cream, with medium shading and medium black sheen. It dries in...

Robert Oster Fire and Ice is a bright blue fountain pen ink with a slight green undertone, medium shading, and medium pink sheen. It dries in 30 se...

Robert Oster Romeo & Juliet is a special edition fountain pen ink with a new and exciting feature for Robert Oster. Romeo and Juliet is a colo...

Celebrate Robert Oster's 7th Anniversary with their exciting new range of inks! This milestone marks a significant moment for the brand, and they a...

This Pulp Addiction Exclusive Ink by Robert Oster is a stunning blue/black ink. Like roiling storm clouds this is a dark and subdued blue ink with ...

Robert Oster Thunderstorm is a dark blue black fountain pen ink with medium shading and low brown sheen. It dries in 30 seconds in a medium nib on ...

Robert Oster Eucalyptus Leaf is a medium olive green fountain pen ink with medium shading and a pop of black sheen in large swabs. It dries in 30 s...

Robert Oster Avocado is a medium 70’s avocado green fountain pen ink with high shading. It dries in 20 seconds in a medium nib on Rhodia and has a ...

Robert Oster River of Fire is a dark green fountain pen ink with low shading and low red sheen. It dries in 30 seconds in a medium nib on Rhodia an...

Robert Oster Motor Oil is a dark brown fountain pen ink with some green undertones, medium shading, and medium black sheen. It dries in 40 seconds ...

Robert Oster Rose Gold Antiqua from the Shake ‘N’ Shimmy collection is a muted rose pink fountain pen ink with coppery shimmer. It dries in 30 sec...

Robert Oster Blue Water Ice is a pretty medium turquoise blue fountain pen ink with medium shading and low pink sheen. It dries in 30 seconds in a ...

Robert Oster Signature Ink Kelp Forest (The 2025 Melbourne Pen Show Exclusive) is a stunning chromoshading ink that shifts between cool green and d...

Robert Oster Tranquility is a rich medium teal/turquoise fountain pen ink with medium shading and medium pink sheen. It dries in 25 seconds in a me...

Golden yellow-brown fountain pen ink with gold shimmer. All that glitters is gold, if it's Oster Heart of Gold ink! Robert Oster Heart of Gold fro...

Robert Oster Sydney Lavender is a dark purple fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an ave...

Robert Oster Cherry Blossom is a pale dusky pink fountain pen ink with medium shading. It dries in 25 seconds in a medium nib on Rhodia and has a s...

Robert Oster Taiwan Blue is a deep blue fountain pen ink with a solid teal undertone, medium shading, and medium red sheen. It dries in 40 seconds ...

Robert Oster Aussie Brown is a medium warm-toned brown fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and h...

Robert Oster Summer Storm is a dusky purple grey fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an ...

Robert Oster Barossa Grape is a dark purple fountain pen ink with a strong blue undertone and medium shading. It dries in 30 seconds in a medium ni...

Robert Oster Velvet Storm is a dark teal fountain pen ink with medium shading and medium pink sheen. It dries in 20 seconds in a medium nib on Rhod...

Robert Oster Sydney Darling Harbour was released at the 2019 Sydney Pen Show and is now part of Robert Oster’s standard collection. It’s a dusky mi...

Celebrate Robert Oster's 7th Anniversary with their exciting new range of inks! This milestone marks a significant moment for the brand, and they a...