We do not appraise rocks. There are too many variables to do so. Not that we don't want to, just it is impossible. It does not look natural. It looks like it has been polished. It looks to have been treated with dye or heat. That obliterates signs we could use as identifiers. That does not mean it is not aquamarine. The best thing to do is take it to a lapidary who can not only identify it, he could value and cut it.
