Glittering yellow dust swirls through the black acrylic of this really stunning Karas Kustoms Vertex fountain pen. Unlike other Vertex pens that we've seen, this one has an amber "jewel" in the top of the pen. We aren't sure if that is from the factory or a former owner's bedazzling. Sporting minimal wear, this preowned pen comes with a standard international converter. You will write a firm extra-fine line with its steel nib. It does have some feedback, as most extra-fine nibs seem to have. 13.5cm capped.