human
How do you tell if a diamond is fake or not?
assistant
You can't. Diamonds are natural minerals that form in the earth and have many different characteristics, so there is no way to definitively determine whether or not a diamond is real without testing it. However, there are some things that may help you distinguish between a real diamond and a synthetic diamond. Real diamonds tend to be more transparent than synthetic diamonds, which often appear cloudy. Real diamonds also tend to have higher levels of color saturation and clarity than synthetic diamonds. Additionally, real diamonds will typically have an uneven shape, while synthetic diamonds tend to be perfectly symmetrical.