I do not believe that the test has to be totally destructive. A small area can be "polished" and tested with an Electron Micro Probe... that will give you a chemical analysis good enough to determine cosmic origin. I really would not want to do it to my high end Keris. Also, the rub is getting it done.
Hey folks, I'm new. (Note to self... be slightly skeptical

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OK. That's what I basically understood from the thread Rick brought up and other comments. But as a pamor, is there a specific "pattern" to pamor Prambanan (like other pamors) or is it time for me to give up?