How to Test Fake Diamonds
- 1). Look at the reflection of light in the diamond. A real diamond will typically show different shades of gray in the light. A fake or low quality diamond will reflect a rainbow of colors.
- 2). Raise the stone to your mouth and blow on it for one to two seconds. Quickly observe the diamond. If it remains foggy for several seconds afterward, it is a fake. A real diamond will clear immediately.
- 3). Place the diamond upside down, so that the pointed end is facing the ceiling and hold it directly over a newspaper. If you can read the print or make out the black coloring, the stone is most likely an artificial diamond.
- 4). View the diamond from the side. A real diamond will sparkle and shine from every angle. If the diamond is shiny at the top, but dull around the sides, it is most likely a fake.
- 5). Look at the price of the stone. Cubic Zirconium, or CZ, costs a fraction of the price of a real diamond. If the price of the stone or setting is unusually low, there is a good chance it is a fake stone. A cubic zirconium may also bear the stamp "CZ", which is another indication the stone is not a real diamond.
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