Robert Oster x Joshua Thorp Turquoise Fountain Pen Ink is a special collaboration ink with a bright, clean turquoise tone that leans slightly more blue than green. Created by Robert Oster in partnership with Joshua Thorp, it was designed to capture the look of a favorite, hard-to-find turquoise shade and bring it back in a refined form.
On paper, it shows a fresh blue-green color that feels light and clear rather than heavy or overly saturated. In finer writing it can appear softer and more airy, while broader strokes bring out a richer turquoise with noticeable shading. The ink naturally shifts between lighter aqua tones and deeper blue-green areas within the same word, giving it a sense of movement instead of a flat, uniform look.
In everyday use, it flows smoothly and feels well-balanced in fountain pens, making it suitable for journaling, notes, and general writing. It is not water-resistant, so it can fade or wash out if exposed to moisture, but on good paper it performs consistently and keeps its bright, refreshing character without issues like feathering.
