jewelry fraud:
flaw concealment

      Where possible, flaws are concealed by their settings. The good stone setter will try to set a stone in such a manner that the setting will help to conceal any visible imperfections. For this reason flaws near or at the girdle will downgrade a stone less than those found in the center of the stone; since settings cover all or part of the girdle, they are simply less visible there. Indeed, a setting can make a flaw "invisible."

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       There is nothing fraudulent in such uses of settings as long as the stone is properly represented. The only danger is that not only the customer but also the jeweler may not have seen the imperfection concealed by the setting. For this reason, important diamonds should be viewed and purchased unmounted.