Rowkey is a user on mastodon.art. You can follow them or interact with them if you have an account anywhere in the fediverse.
In a similar vein, tried out some Smoky Quartz ink out in the field and it did tHiS and I don't even know how to react. i n k ✨ ✨
@rowkey Ooh! Iridescent!
Have you tried walnut ink? You do have to be careful as if you use it for linework and then paint over it, it bleeds.
@ejbarnescomix
I haven't tried it yet, though it's something I've had my eye on for years and years. Such a gorgeous dark brown...
@rowkey I love when ink changes color