International-RP
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Ring sizes inner diameter - 19 mm. Added Size 13 USA. Recommended material - silver or gold! Approximate metal weight (for ring size 19 mm): gold 14k - 20.5 grams; gold 18k - 24.5 grams; silver 925 Sterling - 16.5 grams.
Model volume (for ring size 19 mm): 1583,994 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. Please don't forget to rate the model you purchased. Any questions? Please contact me. Thank you!