Dual-shading Manyo ink from Sailor. This dye-based ink shades in colors different from its base color when pooling in areas of high and low concentration. Create incredible depth in writing, calligraphy, and art. Use with any dip pen, or fountain pen with a converter. This Koke ink is an aqua blue with shading into purples and some green. Made in Japan and packaged in the traditional Sailor square glass 50ml bottle.