This collection of rings is ready for 3D printing.Ring sizes 15.5 16 16.5 17 17.5 18 18.5 19 mm. Approximate weight of rings by size(GOLD 14K):15.5mm-2.59g 16mm-2.65g 16.5mm-2.71g 17mm-2.77g 17.5mm-2.84g 18mm-2.89g 18.5mm-2.96g 19mm-3.01g . Width: 2.4mm.Round stones: 1mm. I can make to order with your sizes of stones. Please contact us.