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-6.75g 16.5mm-6.94g 17mm-7.12g 17.5mm-7.29g 18mm-7.48g 18.5mm-7.66g 19mm-7.85g. Width: 5mm Round stones: 1.7mm. I can make to order with your parameters.