I'm glad you asked, Traveler. [ Lumine, no!!! Don't ask him anything!! ]

These ores here seem to be rather characteristic in their shape and coloration. Liyue's ores are primarily blue and gold as I am sure you are well aware. The purity of this one is quite easy to see, given how see-through it is. I am quite curious to know how the craftsman was able to cut it into such a refined and precise shape.