The evil eye is one of the strongest and most prominent symbols in the world, so chances are you've seen it or heard of it at one time or another in your life. However, it's important to make the distinction and understand the difference between the evil eye itself and the depiction of the symbol on amulets, jewellery and other physical objects, which offer protection against the evil eye.  
So what is the evil eye? The evil eye is a malicious glare given to someone out of spite, malice or envy, which brings misfortune, suffering or just general bad luck to the recipient of the look. The belief is that the malevolent look holds such power that it is able to bring harm to the person that it's aimed at.