Aquamarine should be a kind of beryl. Pure aquamarine is very precious, but this rough stone is light blue and of little value. Under 5 carats, it's about two or three hundred yuan, and the defective ones are even worse. Generally speaking, aquamarine is pure, dark in color, and large (above 5 carats) is flawless and precious. I didn't get the original stone for identification, so I can only say it roughly.