Adjustable Iron Finger Rings, with Epoxy, Changing Color Mood Rings, Heart, Platinum, ColorfulSize: about 0.67 inch(17mm) inner diameter, 0.14~0.16 inch(3.5~4mm) wide; heart: 0.53x0.57 inch(13.5x14.5mm).Our mood rings have a mesmerizing color-changing effect that makes them stand out. The rings change colors as the temperature varies between 15-34 degrees. Please note that the mood rings will not change color if the temperature exceeds 34 degrees, so it's important to keep them at a comfortable temperature to enjoy the full effect.
