50ml Signature Inks

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 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 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 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 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 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...

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 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 Cosmic Swirl is a medium lilac purple fountain pen ink with medium shading and gold sheen in large swabs. It dries in 20 seconds in a ...

Robert Oster - Burgundy Chocolate Notes Robert Oster Burgundy Chocolate Notes from the standard collection is a dusky mauve purple ink with mediu...

The Robert Oster Signature Ink Muddy Crown colour is a dusty dark purple ink color infused with a brown tint and slight sheen.

Robert Oster Velvet Crush is a medium warm purple fountain pen ink with medium shading and medium gold sheen. It dries in 15 seconds in a medium ni...

Robert Oster GoGo is a medium, cool-toned purple fountain pen ink with low shading and a pop of gold sheen in large swabs. It dries in 10 seconds i...

Robert Oster Claret is an desaturated red-violet fountain pen ink with medium shading. It dries in 35 seconds in a medium nib on Rhodia and has an ...

Robert Oster Purple Jazz, formerly known as Purple Soul, is a dark blue-violet fountain pen ink with medium shading and a pop of red sheen in large...

Robert Oster Purple Rock is a dark violet fountain pen ink with medium shading and a pop of red sheen in large swabs. It dries in 40 seconds in a m...