Robert Oster bottle ink, Sinner's Blood, 50ml

Robert Oster Signature Ink – Sinner's Blood

Sinner's Blood is one of the most expressive colours in the Robert Oster Sinners Collection. Deep, dramatic and richly layered, this ink moves between dark crimson and shadowed burgundy, revealing subtle shifts as it dries on the page. It is a colour made for emotion and atmosphere, carrying the weight of story and the depth of character in every stroke.

Crafted in South Australia, Sinner's Blood delivers smooth flow, beautiful shading and a confident presence on paper. Whether used for journaling, sketching or thoughtful correspondence, it brings a sense of intensity and elegance to the written word.

A drink for your pen.

The Remarkable Robert Oster

Robert Oster is a South Australian colour creator whose inks reflect passion, artistry and a deep connection to the Australian landscape. His colours are known worldwide for their expressive shading, reliability and distinctive character.

Each bottle of Robert Oster Signature Ink is handmade in Australia and presented in a recyclable 50 ml PET bottle, produced in Australia’s first carbon neutral plastics plant. Every blend is non-toxic, environmentally considerate and created with care for writers and artists alike.