This collection of rings is ready for 3D printing.Ring sizes 15.6 16 16.5 17 17.5 18 mm. Approximate weight of rings by size(GOLD 14K):15.6mm-3.52g 16mm-3.62g 16.5mm-3.72g 17mm-3.83g 17.5mm-3.92g 18mm-4.05g .Width: 4mm Round stones: 72 (1.0mm). I can make to order with your parameters.