Benu Briolette Fountain Pen - Luminous BlueBenu's Briolette collection features jewel toned resins and metallic shimmers in a wide array of colors. The long facets on the pen highlight the material and prevent it from rolling. The luminous models glow in the dark after an hour exposure to light. Additional light exposure can result in a blue glow lasting up to 12 hours. The luminous paints are completely free from radioactivity and any potential hazards. The Briolette sports a #5 steel Schmidt