My thanks to Marty for the ink sample.
Chesterfield Emerald is a strong and saturated green ink that’s a good shader. It goes from a saturated dark green to a pale light green. Personally, this kind of green doesn’t really do it for me. I prefer my greens to be in the yellow-green range. That’s of course no fault of Chesterfield Emerald. However, Emerald isn’t that unique a colour. I’m sure there are plenty of similar to pick from.