Cubic zirconia jewelry often compares to natural diamonds. It's hard to tell apart from real diamonds from cubic zirconia unless you pay close attention. There are some ways that CZ jewelry can help its wearer distinguish itself from diamonds from those who wish it were otherwise.
As stated above, CZ jewelry is not made the same way as diamond jewelry. However, a few key elements help you distinguish between the two.
Color: Cubic Zirconia is colorless. It has none of the diamonds' imperfections because it is manufactured synthetically.
Sparkle: Cubic Zirconia stones are brighter and emit more fire than diamonds.
Weight: The weight is the most significant difference. Cubic zirconia will always be nearly twice as heavy as diamond earrings if the two have the exact dimensions.