We could do a Bayesian calculation on this based on the size range found to date, but I would like to see a few more exception stones found first. The big stones really do have a material effect on the excpected returns. MUS seems to be finding a lot more of them than GEM and this may reflect that their ground is better than GEMs.
It makes it hard to put an upper value on MUS until we know if the 7 exceptional rubies are a fluke or a reflection of what is in the ground. At the very least it gives us something to speculate about.
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