@MizzBassie this particular one doesn't show shimmer rly in finer nibs but i have a van dieman that definitely shimmers in a 0.5mm nib. both write totally fine and i haven't had any clogging issues yet, but i also haven't used a shimmer in an expensive pen i'd be worried about filling with glitter, so don't just want to say yes it's absolutely fine, maybe try one out in a cheaper pen first ?