I was having one of my sims break space rocks for gems, and I noticed a new gem called fluorite and it was worth somewhere in the 400 simoleons range. It has a light purplish-gray color uncut, and cut it has a pretty purple and aqua color when cut. While I was getting those gems cut, I noticed a new cut called Sculptor's Egg Cut (for 175 simoleons), and I cut an opal with it. The original price of the opal was 422, and cut with the new cut it was worth 1,266, so it has a x3 multiplier. I'm not really sure how you get the cut, or if you start off with it, but I have a prediction that you might get it when a sculpted item breaks (and you get a gem?). In the next few days, when I was sculpting, I got another fluorite, and a woohooium ore. The woohooium, unsmelted, is worth at least 500 simoleons, but I'm not sure how much it's worth smelted since I was on vacation and it came back smelted really close to it's original worth. I have no idea if you can get any of these from transfiguring, but I'm sure the original rules work for making them big.
Sculptor's Egg cut opal
Heart-shaped cut fluorite
Sculptor's Egg cut fluorite (It looks like a dragon egg!)
Woohooium ingot (I love the heart where the plumbob usually is.)