How are there always the right amount of sides, of the perfect size, and all these different little faces and stuff? I know they basically use a big sanding wheel but how do they not have one side bigger or smaller than the others?
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From what I’ve seen my brother do, a lot of math and a lot of practice. He does more cabochons than gem cuts but as far as I know they just map it out (marking on the stone) and then cut accordingly. Often, especially on the smaller ones (most of the ones you’d find on rings) they use lasers, but I haven’t actually ever seen that so I have even less an idea how that works.
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