Hehe yeah, “Sure, you could buy perfect diamonds grown in lab conditions that are way prettier than anything we could offer for way cheaper, or you could buy our authentically dirty or broken diamonds to -prove- you paid way more money to anyone that looks close enough to notice. Won’t they be jealous of how rich you were”.
Well, essentially, it’s that the coriolis effect, while a real thing, is much weaker than most other factors in play. If everything else is neutralised or near to it, the coriolis would indeed be the remaining decider, but that’s very unlikely in practice.