The Meisterstück Montblanc Diamond celebrates the uniqueness of the Montblanc Diamond with refined and sophisticated elegance. Deep black precious resin and elegant platinum-plated details are surmounted by the 43-faceted diamond in the shape of the famous Montblanc emblem. Ballpoint Pen with twist mechanism. Montblanc Diamond in cap-top (~0.05 ct). Montblanc ballpoint pen refills: Mystery Black, Pacific Blue, Nightfire Red, Fortune Green, Amethyst Purple, Barbados Blue, India Orange. Mb106125.