This collection of rings is ready for 3D printing.Ring sizes 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 mm. Approximate weight of rings by size(GOLD 14K):15.5mm-3.91g 16mm-4.01g 16.5mm-4.1g 17mm-4.19g 17.5mm-4.28g 18mm-4.37g 18.5mm-4.46g 19mm-4.55g 19.5mm-4.64g 20mm-4.72g. Width: 3.3 mm. I can make to order with your sizes of stones. Please contact us.