A worry stone is a stone with a thumb-sized indentation that is traced to calm the mind and provide a healing effect. This was made based on that concept, using resin clay. Please find your favorite one. There is an indentation on the back of the heart. It's a small size, made to fit the thumb of a 1-year-old. About 3cm wide (Materials) Oven-bake resin clay, UV resin (coating), metal fittings Please understand that this is a handmade item before purchasing. Please comment if you would like to purchase multiple items. The price includes shipping, so it's a better deal to buy multiple items. #handmade #resinclay #worrystone