Post subject: Re: can diamond tester be fooled by some chemical
Posted: Sat Aug 19, 2017 11:37 am
Gemology Online Veteran
Joined: Thu Mar 19, 2015 9:55 am Posts: 543
Personally I would never rely on a single test, particularly with a valuable stone. I would want to see spectrum, S.G. and R.I. before I committed myself. I am having my tame instrument maker fit a digital depth gauge to a biological microscope so I can get reliable R.I. figures on gems above 1.81.
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