Robert Oster Blood Moon Signature Ink

Robert Oster Blood Moon is a deep crimson-red fountain pen ink with a dark, dramatic character inspired by the rich red appearance of a total lunar eclipse. The color leans toward maroon in heavier applications and can appear slightly purplish on some papers, giving it more depth than a straightforward bright red. Made in Australia, it is part of the Robert Oster Signature range.

Blood Moon offers noticeable medium shading, allowing lighter and darker areas to develop naturally across the page. It has an average flow and a drying time of around 40 seconds with a medium nib on Rhodia paper. Reviews report no shimmer and no significant sheen, keeping the focus on its rich red color and natural tonal variation.

Blood Moon is available in a 50ml bottle and is designed for fountain pen use. Its deep crimson tone makes it a distinctive option for journaling, correspondence, creative writing, note-taking, and ink swatching, especially when you want a dark red with subtle shading rather than a bright, uniform red. Robert Oster inks are made in Australia and are presented in the brand’s environmentally conscious packaging.