I really like the green tint and am looking to find some more.
I can't answer the turquoise source question. Just wondering - for green, could liquid resin be colored green, hardened, and crushed?
What about inlaying with something else, like brass? Can look great on dark wood.
For those interested in inlays in wood in general, Ted Sokolowski made an excellent DVD, "Metal Inlay Techniques for Woodturning & Woodworking". I bought it over a decade ago and did some brass and aluminum powder inlays on turnings. I don't remember the details but I remember the info was useful and the process was not difficult. Should work as well with rock as well as metals.
Fine detail is easy. The example on the front of the DVD is quite small, on a bottle stopper. The wood can be carved or laser engraved. This thread is getting me interested again - might be time to watch the video again, clean off a workbench, set up the laser engraver.

Based on the current price of the DVD on Amazon, they must expect people to be inlaying with gold but I see some used copies are available. Maybe ebay too but I didn't check.
, I tried some powder as an alternative for the same reason. Turns out that we have so much static electricity here in the desert that the stuff would leap off of my spatula, finger, or even the turning itself
I wonder if you could work inside a small "tent" made of plastic and increase the humidity inside - shouldn't take much to increase the humidity with a small humidifier, spray bottle, damp sponges, etc. Could make an enclosure sort of like a glovebox with holes for arms and tape on a clear plastic window. Or get a small sandblasting or paint spraying enclosure.
www.amazon.com/Gyfent-Painting-Portable-Turntable-Furniture/dp/B0D1489N8M
Some larger spray paint tents are big enough to work inside. If made of fabric it might need to be treated to maintain the humidity level.
Just some brainstorming...
JKJ