I'll eventually have an even number of toons on each transmute type.
I'm not sold on Cardinal Rubies being worthwhile, unless I can farm the mats myself.
After dailies today, assuming a little more sungrass on the AH (or I'll farm a few stacks if need be), I'll add another alchemist.

At the moment, I'm doing:
- Ametrites (have 2 of the 22 cuts)
- Dreadstones (have 2 of the 13 cuts)
- Eye of Zul (have 4 of the 19 cuts)
- Majestic Zircon (have 1 of the 4 cuts)

I've got an alchemist on King's Amber, but need another day of the JC daily to open a cut.
- King's Amber (have 0 of the 6 cuts)

On my server, Cardinal Rubies are the highest priced gems, but after deducting the material cost, they are the least profitable of the gems. Profit (after transmute material cost) ranges from 95g 04s to 122g 33s.

Looking at my 14-day trend on gem prices, there are 21 more profitable Ametrine cuts, 13 more profitable Dreadstone cuts, 18 more profitable Eye of Zul cuts, and 4 more profitable Majestic Zircon cuts.