This beautiful ring is specially designed to be compressed into different finger sizes and also an example of it is made that you can watch it in the relevant images and the information is related to the weight of the model and the size of the jems in the images.To change the size better, put the 9.25 STL file in Rhino or Matrix software or other similar software and enlarge or reduce the whole model to get the size you want.Take a 3D print and enjoy the casting work