Contrarier ring 3D printmodel

General information about this mesh:

The mesh has no zero face.
The mesh has no ngon.
The mesh does not have any extremely short edges.
The mesh has no non-manifold edge.
The mesh has no open edge.
The mesh has no identical face.
The mesh has no face with a direction other than the overall direction of the mesh.
The mesh has no disjoint parts.
The mesh doesn't have any unused vertex.

Geometry:
Valid mesh.
Double-precision closed polygon mesh: **667 vertices, 159612 faces with normals
Boundary box: (22.3545,-6.59324,0) to (42.2065,6.59076,22.41)

The ring is ready to print and cast but has not supports.

Metal Weights:

Yellow Gold:10KY 4.22
Yellow Gold:14KY 4.74
Yellow Gold:18KY 5.68
Yellow Gold:22KY 6.59
White Gold:10KW 4.05
White Gold:14KW 4.64
White Gold:18KW 5.4
White Gold:10KX1 4.12
White Gold:14K PdW 5.29
White Gold:18K PdW 5.76
Rose Gold:10KR 4.25
Rose Gold:14KR 4.8
Rose Gold:18KR 5.68
Green Gold:10KG 4.58
Green Gold:14KG 5.22
Green Gold:18KG 5.86
Silver:925 3.82
Platinum:PLAT 7.4
Platinum:PLAT RU 7.61
Titanium 1.66
Steel 2.84
Wax CNC 0.37
Resin 3D Printer 0.44