Turning the dust into enchants for the AH as well as just selling the mats is generally the next step to the shuffle. Alternately cutting the green gems and vendoring those that turn out green while selling those that proc perfect might be the way you want to go. I'd suggest digging up some spreadsheets and figuring out what will work for you is probably the best bet. Simply planning to buy and cut gems to resell is a risky proposition because of posting costs. It sounds like thats what you were initially trying to do?

http://xsinthis.net/2012/10/is-the-s...ers-yes-it-is/