Hi Lynne,
It could well be fluorite, a lot isn't coloured all the way through and is clear in places. I know they make little figurines and animals out of it, as well as orbs, wands, etc.
I have quite a bit of fluorite from all over the world, and as there could well be fluorite found in New Mexico, as well as China, Afghanistan, and even over here (but the Blue John mine closed down a few years ago).