Can you tell the difference between a Ziamond Cubic Zirconia and a diamond?
Not without testing the gem to see what the heat conductivity is (a diamond can conduct more heat,) or they must remove the gem from the mounting and weigh it (a cubic zirconia weighs about 1.8 times heavier than a diamond.) These are the traditional tests that must be conducted to tell the difference. There have been many instances to see if jewelers can tell the difference just by examining the gems with the naked eye. Over and over again, it was inconclusive. Jewelers could not tell the difference just by looking at the gems. Remember it is a 50/50 guess to identify a gem by visual inspection, it is not a scientific method of authentication. That is why certified and degreed gemologists exist, they must use gemolocial equipment for testing and verification.
