Hi, Kirra -
I use a Pixie for primarily for cutting opal, but I also use it for other types of stones. It does everything that I need. If you decide to get a Pixie, check out the modifications I've made to to mine by following the links I've posted earlier. They aren't necessary, of course, but they make life easier. :)
If you'll be cutting a lot of larger stones, say in the range of 40x30 mm or so, then you might want to consider a larger machine that would give you more room between the wheels and may cut a little faster.
Two other machines that you will eventually find to be essential are a trim saw and flat lap. If you have a lapidary or rock & gem club near you, they usually have machines available for members to use. That option could delay or eliminate the need to buy additional equipment.
Gary
