Formal women wear can be seen incomplete without the sparkle of a diamond so why not invest on a diamond? It will surely make your formal women wear attire look more elegant and stunning. But be warned, there are fakers out there that may dupe you and your hard earned cash!
When looking at diamonds, never look at it on a tray or jewelers tray to be exact. However, try looking at it on a newspaper or look at the diamond while it is resting on a printed material. The diamond is real if you are unable to read the print through the facets; on the other hand, if the diamond is a fake then it is simply like looking through the stone like a glass.
Thermal conductivity can also be one of the tests to make sure a diamond is a fake. Diamonds are extremely good conductors of heat and most jewelers have a small instrument that can measure this. No other material can ever match a diamond with this test.
You can also try fogging. This test is a very easy test to do since all you have to do is put the rock in front of your mouth and fog it as if you would a mirror. If it stays fogged for two to four seconds then you guessed its a fake. However, if you fogged it and it immediately disappeared then you can be certain that its not a fake. A genuine diamond disperses the heat instantaneously so by the time you look at it, it has already cleared up.
Though its an easy test, its not that reliable since there are doublet diamonds meaning the outside is pure diamond but the inside or core would be cubic zirconia attached together. Also sometimes oil and dirt on the stone can affect its reliability.
You can also try looking at stamps on the setting of the jewel, stamps like 14k, 18k, 750, 900, 950, PT, Plat can indicate that the stone is real as well. However, a logo or stamp of C.Z. indicates that its a fake.