Features: 1. Elegant shinny oval acrylic gemstone pendant add more elegance and grace to your looks. 2. Openable locket can be a photo frame can put in small photo. 3. Color changes with temperature black when below 14 degC varies from 14-38 degC to various colors. 4. Great gift for women friends family. For birthday anniversary holidays graduation Christmas Valentine's Day Mother's Day. 5. Unique color changing pendant necklace can match with any clothes for any occasions. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement. Specification: Type: Temperature Change Color Necklace Product material: Chain: stainless steel pendant frame: alloy gemstone: acrylic Size: as picture shows Pendant features: can be opened can change color. Color changes with temperature black when below 14 degC varies from 14-38 degC to various colors includes: 1 x necklace 1 x pendant"