I Googled "malachir" and it suggested "Malachite" from Wikipedia, which I'm guessing after reading the link, is what was used. Interesting link to read.
I've only seen crushed turquoise used. But I really like the green!
It is indeed nicely done and I also would like to know how it was inlayed and any turning or finishing problems.
That's the stuff N6DSW. I ordered a somewhat smaller than fist sized specimen and crush it by hand to fit what space I'm filling. You can use a quality clear drying epoxy or CA. Sanding everything level and refilling any gaps or air holes is the most trying aspect but it can be done with regular sandpaper up to a Mohs hardness level of 7 or so.
I was inspired mainly by Stephen Baxter. If you haven't seen any of his work Google it up.