Print Ready 3D Model Engagement ring set. Center Diamond variations: Center Diamond Round - 0.54 ct / 5.25 x 5.25 mm. Metal weight: 14k 5.270gr, 18k 6.310gr, 22k 7.320gr. file format: STL and 3DM. The files are checked for errors by Magics software and all the objects are passed and ready for 3D printing. This ring can be resized to any finger size at no cost. If you have any questions regarding the Round Engagement Ring please feel free to contact me. Thank you.