please check the pictures for gem sizes and diamension detales. For any additional information or request , or if you have problem with downloading ,please contact me. I'll be glad to help you as soon as possible. The model is made in full compliance with the technical requirements for production. ring size: 54 or 6.75(us) gems: 52pcs round shape from 1.2mm to 1.8mm and 5pcs marquise shape (4*2)mm