My newly purchased Rook is a really nice fountain pen: I fitted it with a
Diamine Turquoise international cartridge and from the get-go, flow was optimal,
it writes a nice, steady, and consistent line, and it\'s compact size is just
what I was looking for. For the $, it\'s a good deal if you need a fp.
I particulary like to use Pilot Iroshizuko Yama Budo ink in my Sailor fountain
pen, using a cartridge. Recently, with the cartridge half empty, I topped it off
with the 1670 Anniversary ink and, to my eyes, 50:50 Yama Budo and 1670, the
result was good. Correct me if I'm incorrect, but the J. Herbin 340th Anniversay
Ink appears to have gold flakes in it which are noticeable when the ink bottle
is agitated by turning upside down a few times. For a one-off Anniversay ink, I
think the purchase for the bottle alone is worth it.