Robert Oster Emerald went into my Sheaffer Targa in Green Moiré with a stub nib, and the ink proved an excellent match for that spectacular pen. It’s an ink that feels just a little fresher and crisper than most standard greens.
Here’s a larger writing sample on Rhodia.
There’s almost a luminous or translucent quality there, like stained glass.
Here is Emerald on cream-colored Tomoe River paper.
Reliable sources tell me that Emerald sheens a lot with a very wet nib. With my pen, there was just a tiny bit of sheen, which you can see on the “T” below.
I was captivated by the color and the shading of Emerald, even without huge amounts of sheen. But if you want sheen, you can get it.
Emerald did incredibly well on poor paper, with some showthrough but almost no feathering. Here’s a closeup on Staples Sustainable Earth.
Robert Oster Emerald is one of the inks I’m previewing for the Chicago Pen Show Ink Testing Station. I really like it so far.
Fountain Pen Follies 
While it’s not the kind of green I enjoy most, it’s well behaved ink.
LikeLiked by 1 person
It looks gorgeous and makes another winning combination with your Sheaffer Targa’s stub nib.
LikeLiked by 3 people
I think that is a lovely color. It sort of reminds me of KWZ-Pine Green, from the Vanness site. I’ve never tried either of these two colors though. I do love my greens in just about every variation possible. 🙂
LikeLiked by 2 people
Oster inks are all so gorgeous. I haven’t had a chance to try this one yet, but I think that’ll be changing soon!
LikeLiked by 3 people
Thanks for your review. Just recently got into green inks and I may have to try this one out at the Chicago Pen Show.
LikeLiked by 2 people
What a fantastic hue of green !
LikeLiked by 2 people