HERBIN - Phosphorescent Ink Miniwallet Unicorn Studio uses Polystone because

Unicorn Studio uses Polystone because it has an incredible ability to capture the most minute detail

Pigment Classification: Natural InorganicColor Index Name: PY 43Color Index Number: 77492Chemical Description: Natural Hydrated Iron OxideOpacity/Transparency: Semi-OpaqueLightfastness Rating: IPermanency: ExcellentMunsell Notation Listing: Hue 9

Visconti reproduced the textures of oil painting on his canvases in pen form

The pen uses a twist mechanism and has a metallic lacquer overlay

HERBIN - Phosphorescent Ink Miniwallet Unicorn Studio uses Polystone becauseHerbin's Phosphorescent Ink is invisible under normal light but glows in the dark or under UV light. For use with dip pens and brushes. Not to be used with fountain pens.