Vista Natural Diamond Segregator

I works great for identifying natural stones. Not so much for diamonds. I have lost over $5000 using this machine saying the sapphire is natural earth mined. The Sapphire is natural why is it testing all stones it's a diamond tester / segregator. Why does it test everything is what I wany to know. It's a diamond tester that how it is sold. BULL CHIT.. To good to be true.

When I tested Moissanite, chrysoberyl, Garnet and Spinal all came up as Earth mined diamond? I have a $12. Detector that does a better job, Seems the only true method of ID is the old microscope because this doesn’t do it! Pete H. GIA GG