Model is ready for 3D Printing and prototyping on CNC. Geometry is healed, and fixed all the bad with RP Magics software Ring sizes: inner diameter mm : 17 | 17.5 | 18 | 18.5 | 19 Size USA: 6.5 | 7.25 | 7.75 | 8.5 | 9 | 9.5Gems size 8x6mm 1.5mmApproximate metal weight (for ring size 17.5 mm): gold 14k – 5.28 grams; gold 18k – 6.31 grams; silver 925 Sterling – 4.24 grams. Model volume (for ring size 17.5 mm): 409.6 cubic mm. You can check out my other products by clicking on the author name s.kim_jewelry_design. Any questions? Please contact me. instagram @s.kim_jewelry_design email skimjewelrydesign@gmail.com facebook s.kim_jewelry_design youtube SKIM Jewelry Design