That's a lovely ring. It is very similar to the BTD sapphire ring I'm going to have made
~and describing MOHs with cleavage and perpendicular is actually rather common. I've seen diamond, moissy, CZ, etc. described that way. That is why Diamonds *will* crack/chip with wear. If the crystal is oriented just right and the strike is just right, MOHs does not = 10.