How To Tell If Your Diamond Earring Is Real. And by that time it is too late to make any accusations or get any recourse. A real diamond wont fog up easily since the condensation doesnt stick to the surface.
Quick instructional video on how to check if your diamond is real or fake. In a pair of round cut diamond studs each 050 carat diamond would measure around 5 mm in diameter. However if the stone passes at least one test there is a chance you have a real diamond.
If you shine the light through the stone and see only a bright halo around the rim it is more likely to be a true diamond.
A similar test uses a small light such as one that can be carried on a key ring. How can you tell if a set diamond is real. This is because diamond is a. If it clears up after a second or two then its real but if karat stays fogged for three seconds or more then youre looking at a fake.