50ml Signature Inks

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...

Robert Oster Great Southern Ocean is a beautiful, deep indigo-blue fountain pen ink that borders on being blue-black, with medium shading and low r...

Robert Oster Direct Sun is a brash fiery red fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an aver...

Robert Oster Black Violet is a dark purple-black fountain pen ink with low shading and a pop of red sheen in large swabs. It dries in 30 seconds in...

Robert Oster Gold Antiqua is a dark, golden yellow fountain pen ink with medium shading. It dries in 35 seconds in a medium nib on Rhodia and has a...

Robert Oster Dragons Night is a vibrant blue-violet fountain pen ink with medium shading and medium copper sheen. It dries in 20 seconds in a mediu...

Robert Oster Green at Night is a great dark green fountain pen ink with medium shading and medium red sheen. It dries in 30 seconds in a medium nib...

Robert Oster Moss is a dark mossy green fountain pen ink with medium shading. It dries in 25 seconds in a medium nib on Rhodia and has an average f...

Robert Oster Viola is a bright spring purple fountain pen ink with medium shading. It dries in 15 seconds in a medium nib on Rhodia and has an aver...

Robert Oster Melon Tea is a dark, cool-toned brown fountain pen ink with medium shading and low bronze sheen. It dries in 35 seconds in a medium ni...

Robert Oster Grey Seas from the 1980’s collection is a dusky blue grey fountain pen ink with high shading. It dries in 30 seconds in a medium nib o...

Robert Oster Blood Crimson, is a medium muted red fountain pen ink with medium shading. It dries in 20 seconds in a medium nib on Rhodia and has a ...

Robert Oster Flaming Blue is a classy dark blue fountain pen ink with medium shading and high copper sheen. It dries in 20 seconds in a medium nib ...

Robert Oster Citrus is a vibrant, bright green fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an av...

Robert Oster Burned Orange is an interesting, dark orange fountain pen ink with medium shading and a little bit of black sheen in large swabs only....

Robert Oster Bondi Blue is a summer, medium turquoise blue fountain pen ink with medium shading and medium pink sheen. It dries in 30 seconds in a ...

The Blue of the sky that wafts fluffy pastel clouds in milky Pinkish-Blue Wind. Robert Oster Inks     An iconic Aussie product within just months o...

Robert Oster Deep Sea is a gorgeous dark teal fountain pen ink with medium shading and medium pink sheen. It dries in 30 seconds in a medium nib on...

Robert Oster Gummy Shark is a pretty, grey fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an averag...

Robert Oster Toffee is a medium, warm toffee brown fountain pen ink with medium shading. It dries in 50 seconds in a medium nib on Rhodia and has a...

Robert Oster Deep Purple is a dark, saturated purple fountain pen ink with low shading and a pop of brown sheen in large swabs. It dries in 15 seco...

A lovely Olive Green signifying the Earth and everything good in it. Ranges from pale pastel to rich olive depending on your brush or pen and where...

Robert Oster Bishop to King is a vibrant, blue-purple fountain pen ink with medium shading and a pop of bronze sheen in large swabs. It dries in 20...

Robert Oster Australian Shiraz is a dark, burgundy red fountain pen ink with medium shading and low black sheen. It dries in 45 seconds in a medium...