Well lubricated yet dryish ink with good shading.
I am a sucker for sepia-like inks. I ordered the new Edelstein Smokey Quartz because I wanted an ink of this type that writes drier than the others I have. I feared it would be too yellow. However, it is actually a very pleasing color, and it shades much more than I expected. It is as well-behaved as expected from an Edelstein ink.