The introduction of perfect cuts for green uncommon gems with the same stats rare cuts sort of killed JC (or at least non-metagem gemcutting) as a moneymaker this expansion (so far, on my server).
Its much cheaper to produce a perfect uncommon gem then a rare cut. Especially for green, violet and orange gems, which you need for the meta.
I dont care much if I have the recipe or not, as cutting rare gems is lost money.