Robert Oster Green Olive Signature Ink

Robert Oster Green Olive Signature Ink is an unusual deep yellow fountain pen ink with an olive-like character that becomes more apparent in heavier applications. Despite its name, the color leans distinctly toward yellow rather than green, giving it a warm and earthy appearance that can look surprisingly different depending on the amount of ink used. Made in Australia, it is part of the Robert Oster Signature range.

Green Olive offers medium shading, allowing the color to move between lighter yellow tones and deeper, more olive-looking areas across the page. It has an average flow and no shimmer or sheen, keeping the focus on its natural color variation. The ink is also not water resistant, making it best suited to everyday writing where permanent ink performance is not required.

Green Olive comes in a 50ml bottle and is made in Australia. Its distinctive yellow-olive character makes it an interesting choice for journaling, correspondence, creative writing, ink swatching, and fountain pen users who enjoy less conventional colors with visible shading.