3D model for CNC machines and printing. The file in 3dm format is available for editing. Model volume (for ring size 19 mm): 847,49 cubic mm. Approximate metal weight (for ring size 19 mm) : gold 14k – 10,9 grams; gold 18k – 13,1 grams; silver 925 - 8,8 grams. Ring sizes inner diameter: |18|18,5|19|19,5|20|20,5|21|. Model avalible in STL format for prototyping. Geometry is healed, and fixed all the bad with Magics software.