This collection of rings is ready for 3D printing.Ring sizes 16 16.5 17 17.5 18 18.5 19 mm. Approximate weight of rings by size(GOLD 14K): 16mm-4.93g 16.5mm-5.03g 17mm-5.19g 17.5mm-5.34g 18mm-5.53g 18.5mm-5.67g 19mm-5.8g.Width: 5.6mm Round stones: 1.3mm. I can make to order with your parameters.