Not only do these sophisticated gel pens work on white paper; they will also apply beautifully to black paper. Smooth acid free ink gel pens feature a 0.05 mm nib. A solid pen trio with the shine and gold or silver, plus the pow of the opaque white gel pen will give you striking results. Put them to use on invitations, journals, calendars, crafts and art projects and more. In combination with a black paper sketchbook, the Modern Gel Pens make a trendy gift idea. Metallic gold and silver ink and opaque white ink Acid free Writes on black paper Suitable for ages 3 and up