Pennonia ink is hand-made by ink enthusiast Máté Bikfalvi, who takes his inspiration from the language, places, culture and traditions of Hungary. Cult Pens exclusive colours: Jade and Lemon Yellow. This is an additive which, when mixed in with Pennonia ink, results in unique shimmer effects. It is probably safe to use with other brand inks but the effects can't be guaranteed. Each bottle comes with a mini pipette for ease of use.