3D model for CNC machines and printing. The file in 3dm format is available for editing. Model volume (for ring size 19 mm): 1225 cubic mm. Approximate metal weight: gold 14k – 16,1 grams; gold 18k – 18,8 grams; silver 925 - 12,4 grams. Model avalible in STL format for prototyping. Ring sizes inner diameter: |16|16.5|17|17.5|17.8|18|18.5|19|19.5|20|21|21,5|22|22,5. Geometry is healed, and fixed all the bad with Magics software.