free ring Free 3D print model

free ring american size: 7.5 (diameter 18mm)
14k gold weigth 1 gr.
18k gold weigth 1.2 gr. silver weigth 0.85 gr. You can see the dimensions of the model on one of the photos presented here. There 3dm file for editing and stl for printing. 90% of my 3d models have been checked: made wax and finished product in gold or silver .Model are for 3D printer or cnc machine. Made in program Matrix + Rhinoceros .High polygonal model. Model was checked and fixed in program Magics .Ready for the print.