Description:Material: zinc alloyColor will change with your mood and the temperature of your body and reveal your inner emotionsIt will become black below 14 Degrees Celsius, and will be different color between 14-38 Degrees CelsiusElegant moon shape gem necklace and ring, color changing jewelry set, novelty and fashion choicePackage with delicate paper gift box ,will be great jewelry giftsSpecification:Ring Size: 1.5 x 1.3cm / 0.59 x 0.51inchChain Size: 60cm / 23.62inchGem Size: 1.94 x 1.4cm / 0.76 x 0.55inchPendant Size: 2.78 x 2.5cm / 1.09 x 0.98inchJewelry Box Size: 8.15 x 5.15 x 2.6cm / 3.2 x 2.02 x 1.02inchPackage Includes:1 Piece Color Changing Jewelry Set(1 Piece Gift Box, 1 Piece Necklace, 1 Piece Ring, 1 Piece Color Swatch)(3 Pack)Note:Color might be slightly different due to the color calibration of each individual monitorPlease allow slightly measuring deviation due to manual measurementThanks for your understanding and enjoy your shopping moment