This Personalized and Customized for you Mother's ring comes with your choice of 1 to 9 Simulated Birthstones in Sterling Silver. It is Rhodium Plated over Sterling Silver.The Princess Cut Simulated Birthstones measure 3.0mm each. The top of the Tic-Tac-Toe measure 23.6mm long. The shank measures 2.4mm wide and 1.6mm thick. For more information, please view the CAD image on this listing. After Your Purchase, please Send us a message telling us Left to Right what are the BIRTH MONTHS you need us to set in your ring. You can also call us to give us this information, at 1-800-709-9445 Monday-Friday 10:00am-6:pm Central Time. Great Mother's day, Birthday, Anniversary or Christmas Gift for the special women in your life!