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 mm. Approximate weight of rings by size(GOLD 14K):15.5mm-4.82g 16mm-4.94g 16.5mm-5.02g 17mm-5.09g 17.5mm-5.16g 18mm-5.23g 18.5mm-5.3g 19mm-5.38g 19.5mm-5.45g . I can make to order with your sizes of stones. Please contact us.