^Ah, so that means if you are buying stones lesser than a certain size it doesn't really matter if they are industrial grade diamonds, if it sparkles and it's pretty you're good to go? Interesting.
Never once did "Industrial grade diamonds" enter my posts. I don't even know what these are, except that maybe there are some industries that require the hardness of diamonds for production. (?).
If you know diamond jewelry in any capacity, you know where to spend money and where to consider the alternatives, i.e., combinations of the 4 c's which on paper may not amount to "awesome", but can compensate enough to stand on their own. This usually translates to smaller stones.