Van Dieman's Professional Natura Dualis - Harvest Tide Dual Tone Fountain Pen Ink embodies the transition from summer to autumn with a soft yet richly complex color inspired by golden wheat and cooling air. Designed for dual and multi-shading performance, this ink reveals highlighted edges, subtle halos, and flowing secondary tones that shift with nib, paper, and flow. Harvest Tide offers a grounded, natural expression that brings depth and warmth to your writing, capturing the essence of seasonal change with every stroke.