1 Ore mining from the Arctic, 2 ore dressing, and 5 ore dressing at a time. The worst one has nothing (I have always been embarrassed by this situation). The best ones are two green ones and two blue ones (I've had this situation before). As for the purple one, I haven't seen it yet. Titan iron ore can also be beneficiated, and Titan iron powder is selected, which is very needed by jewelers and can be converted into coins. It is said that Titan Iron also produces purple stone, but I can't afford to choose it, so I can only hear about it. . .