An investigation has uncovered a lab-created diamond, submitted to the Gemological Institute of America (GIA), that was deliberately made to mimic a natural diamond. | Source: GIA/Danny Bowler

Differential interference contrast image near an apex of the stone showing the roughening of junctions between the faces and evidence of polishing after the roughening occurred. Image by David Fisher; field of view 0.48 mm.

DiamondView image of one of the faces of the stone showing luminescence features consistent with a CVD synthetic diamond. Coarse bands of variable intensity orange emission from nitrogen vacancy centers are visible, along with growth striations and “plumes” of blue emission from dislocations within