British Fountain Pen Ink

British fountain pen ink means Diamine, making ink in the UK since 1864, alongside the much younger Tom's Studio range from Dorset. Diamine's standard colors come in 30ml and 80ml bottles, with many also sold as international cartridges, while the Shimmer line and the Inkvent editions, chameleons included, arrive in 50ml bottles, and the Forever pigment inks are waterproof once dry. Tom's Studio fills 50ml bottles with its own colors and a handful of shimmers. Read each line's notes before you fill: a shimmer wants a gentle roll of the bottle first.