For a number of years now I've been slowing building a collection of jade carvings. Jade collecting takes a surprising amount of knowledge to avoid getting suckered by a bad deal.
The first thing an amateur jade buyer or collector needs to know is that many merchants have a tendency to call any green-looking stone "jade", when it may really just be serpentine, glass or even plastic. Sadly, a number of names for minerals are very misleading because they use the word "jade" but are not, in fact, either jadeite or nephrite.
This is a very interesting article Carl. I have a carved piece of Jade which is beautiful, I will have to dig it out now and do some testing eh?