L’Artisan Pastellier is a boutique manufacturer in France that specialises in inks based on natural pigments. The Callifolio ink range features a vivid colour palette. The inks are non-toxic and are safe for use in all fountain pens. Although they are not waterproof, their composition allows for easy mixing of different colours within the range so you can even create your own individual hues. The Callifolio ink is supplied in a charming 40 ml triangular glass bottle and if you plan to collect several bottles, they fit together beautifully in a circular fashion.