Borealis 849Set: a spectrum as bright as the northern lights Caran dAche unveils Borealis, a new set comprising an 849ballpoint pen and a mechanical pencil with the most intense, subtle and enchanting of gradations. From violet to green, a spectrum as bright and rhythmic as the northern lights. The two icons draw their magic from fantastic nights, adopting a resolutely modern style. These two writing instruments complement each other in their daily use: the ballpoint pen, with its Goliath ink refill, offers robustness and durability. The mechanical pencil is the ideal partner for writing in graphite. It offers you good handling and the possibility of erasing when creating precise, technical drawings.