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donovan-58
Ring sizes inner diameter - 19 mm, Recommended material - silver or gold! Approximate metal weight (for ring size 19 mm): gold 14k - 12.6 grams; gold 18k - 15.1 grams; silver 925 Sterling - 10.1 grams.If you want to do as in the photo, then the part that is gold 14k will weigh - 2.42 grams and the part that is made of silver 925 - 8.14 grams.
Model volume (for ring size 19 mm): 974,156 cubic mm. Model avalible in STL format for prototyping. Geometry is healed, and fixed all the bad with RP Magics software You can check out my other products by clicking on the author name artchahur. Any questions? Please contact me. Thank you!