I have always been fascinated with mood beads because of their beautiful colors & they remind me of my younger years. These barrel shaped beads are made out of polymer clay & a heat sensitive liquid crystal. They measure 13mm x 21.5mm. (1 bead) Below is a chart that tells you what type of mood your in when the bead turns a specific color: MOOD CHART Black: Stressed Brown or Gray: Fear Yellow: Nervous Green: Mixed Emotions Turquoise Blue: Normal Dark Blue: Relaxed Indigo: Calm Purple: Cool Orange: Lovable Light Green: Romance Teal: Passion Deep Blue: Very Happy Restocked Mood Bead Polymer Clay Heat Sensitive Persian Beauty 13mm X 21.5mm Barrel 1