Description:Color will change with your mood and the temperature of your fingerUnique round shape， sure to enhance your charmColor change according to change from high temperature to low temperature: Purple， blue， green， brown， red， coffee， blackYou can see 18 kinds of color change at maximum with naked eyeGreat gift to your friends， family etcRing inner diameter: Approx. 17mm / 0.67 inch (minimum)Crystal size: Approx. 0.6 x 0.6cm / 0.24 x 0.24 inchRing face material: High purity crystal + plasticsRings material: AlloyPackage Includes:1 x Oval color change mood ring