I have a question about diamond testing… we had a diamond
that recently came into the store that tested as a diamond on
the standard electronic tester, but I was not convinced because;
there was porosity on a poorly done retipping job and cracks
in the metal, possibly indicating that the prongs might have
been bent back and replaced by someone other than a jeweler…
the stone, although lower in color, not perfectly round,and
slightly chipped on the girdle, was absolutely clean looking
under a loupe.
Is it possible that it is a YAG or some other synthetic that
tests as a diamond on a regular tester? I thought to put it to
the test with a torch, but would like to be sure of what to
expect before asking the customers permission.