As of right now, the new J. Herbin ink Emerald of Chivor is back in stock in the US and UK.
This limited-edition ink sold out of its initial supplies almost immediately and was backordered. It’s now back in stock, although with some restrictions due to high demand.
In the US, Goulet Pens has it in stock now. You can buy a sample size, full size bottle or an ink samples set. Click here for their product page. Due to high demand, sales of the full size bottles are limited to two per customer.
In the UK, the ink is now back in stock at Bureau Direct. Here is the product page, you can choose Emerald of Chivor from the pull-down menu. Again because of the high demand for this ink, it is not part of any discount codes.