Montblanc StarWalker Blue Planet Metal Doue Fineliner Pen 125285. StarWalker Blue Planet is about walking amidst the stars, exploring the cosmos and foreign galaxies, and being part of one of the most mysterious and powerful adventures humankind has ever undertaken: space exploration. Zooming in on our planet Earth, we take inspiration from water, the source of life. The StarWalker emblem technology features a blue translucent dome with a star floating on top, which represents the Earth emerging above the lunar horizon as seen from the moon. The StarWalker Blue Planet Metal Doué Fineliner comes with a platinum-coated cap and metal guilloché barrel with blue translucent lacquer.