A worry stone is a stone with a thumb-sized indentation on its surface, meant to be traced with the thumb to calm the mind and provide a healing effect. This item is made of resin clay based on that concept. Originally, it's meant to be kept in your pocket and carried with you at all times, like a charm. Please find your favorite one. Star width: about 3.4cm (Materials) Oven-bake resin clay, UV resin (coating), metal fittings Please understand that this is a handmade item before purchasing. If you would like to purchase multiple items, please leave a comment. The price includes shipping, so purchasing multiple items is a better deal. #handmade #resinclay #worrystone #tsubaki