COUPLE RING 3D print model

1) .Stl and .obj files are attched herewith. 2) The Rings are solid and suitable for investment casting. 3) The total polygon count of mesh is 0.15 million each. 4) Volume of the closed solids = approx 1116 mm3 for the pair. 5) Mesh is 3d printable and castable , diamonds are of 2.2 mm each. 6) The Current sizes of the ring are : 17mm for diamond ring and 20.3 mm for ring without diamonds. 7) Need any help , ready for modification.