There is no reconstituted malachite. There is fake malachite, manufactured malachite substitutes, plastic that looks like malachite, and some other polymer malachite look alikes. All cues I've ever seen with malachite inlays have been real malachite.
Incidentally, malachite is toxic. Breathing very much malachite dust very many times is not a good idea. Those guys in Russia who made sinks and counter tops out of it learned this the hard way. If I did much grinding/sanding of malachite I'd do it in a well ventilated area with a mask on.
Incidentally, malachite is toxic. Breathing very much malachite dust very many times is not a good idea. Those guys in Russia who made sinks and counter tops out of it learned this the hard way. If I did much grinding/sanding of malachite I'd do it in a well ventilated area with a mask on.