ring 3d model

Please modify and correct this 3D ring model with high precision for jewelry production. Ring Shape Correction: The ring is currently not perfectly round. Adjust the inner and outer circumference so the ring becomes a perfect geometric circle (360° symmetry) with no warping, flattening, or deformation. Ensure uniform thickness around the entire circumference unless intentionally decorative. Ring Size Specification: Set the inner diameter to match US Ring Size 10 precisely. Inner diameter must be 19.84 mm (±0.02 mm tolerance for jewelry manufacturing). Inner surface should be smooth, clean, and comfortable for daily wear. Design Preservation: Preserve all original decorative details, engravings, textures, and artistic elements exactly as they are. Do not simplify, distort, or lose any fine details while reshaping the ring. Maintain symmetry between left and right sides of the design. Structural & Manufacturing Readiness: Ensure the model is watertight (manifold) with no ho