Of course you're brilliant.  But how will everyone else know before you've had a chance to demonstrate it?  Easy peasy.  Before launching into an explanation of, say, the Pythagorean Theorem, daintily touch your neck, where this simple pendant of oxidized silver chain and pendant will make clear your innate intelligence.  Who else would wear such a piece except someone who clearly knows her stuff (whatever stuff that may be)?

Length: 15 1/4" with a 1 3/4" drop