If you were alive in the chances are you had a mood ring or saw one. Mood rings are rings with a stone that changes color, supposedly in response to your emotions. Here's a look at how mood rings work and whether they really can tell how you.
klick-klackers loved these as a kid, just don't hit yourself with one of these.
A STUNNING COLOURED DIAMOND AND DIAMOND RING, BY MOUSSAIEFF. DESIGNED AS A FLOWERHEAD, SET WITH A HEART-SHAPED FANCY RED DIAMOND WEIGHING 2.09 CARATS, WITHIN A PETAL SURROUND SET WITH SIX PEAR-SHAPED DIAMONDS WEIGHING 1.07 TO 1.01 CARATS, ACCENTED BY BRILLIANT-CUT DIAMONDS, TO THE SIMILARLY-CUT DIAMOND THREE QUARTER-HOOP, MOUNTED IN 18K WHITE GOLD, RING SIZE 5½, IN BLACK SUEDE MOUSSAIEFF CASE.