mens signet ring with black gem american size 11(diameter 20.8mm) 14k gold 25.6gr. 18k gold 30.6gr Volume = 1988.18134 (+/- 1e-06) cubic millimeters. Mesh: vertex count = 364265 facet count = 344100 You can see the dimensions of the model on one of the photos presented here. There 3dm file for editing and stl for printing 95% of my 3d models have been checked: made wax and finished product in gold or silver . High polygonal model.Made in program Matrix . Model was checked and fixed in program Magics . Ready for the print.