Diamonds are common in an economic sense, there's plenty to go around. But as far as planetary geology goes, diamond is a pretty small share of the crust. I sup

Diamonds are common in an economic sense, there's plenty to go around. But as far as planetary geology goes, diamond is a pretty small share of the crust. I suppose there may be large diamonds in the mantle, that would be cool to see. But maybe it is similar across the galaxy, except for the odd moon-sized diamond here and there, a light dusting of micro-diamonds.