I have 32 alchemists... with my gem output + the honor change the market is pretty flooded... which is a bit odd. I produce an average of 40 gems per day or so with procs. About 4.5k worth of profit per day. Which for doing nothing but making gems isn't bad.

I also use alchemy to make titansteel and every 1000 gold spent nets me 1800, and i have a dedicated buyer @ 90 per bar.