Ok...love green inks. The Herbin ink - Vert Olive has been a hot favourite of mine, in the Visconti Sunflower (m), also the Diamine Wagner was superb. Checking out the Moonstone ink...looks divine.
I think there is no wrong choice in the face of these options, all excellent shades of green. Recently I have used a lot of Diamine Emerald, and Salamander (Salamander is not technically green, is it ?, it looks green sometimes, depending on the paper and the nib). I have to try more green inks (=. Unfortunately, there are not many green inks available in the brazilian market, so I have to use the internet ... but international orders, recently, are a problem ... Thank you very much for the video; content like yours has helped me to keep my mind busy with a hobby, and not focus so much on the horrible things that happen in the world today.
I just looked up swatches of those two Diamines, Emerald reminds me a whole lot of Elf. :P The Salamander is nice and dark. :D I appreciate the kind comment! International orders are really difficult right now. I wish you luck!