This #collection contains #rings in all sizes from 16mm to 22mm in 0.5mm increments.Approximate weight of rings by size(GOLD 14K): 16mm - 4.07g 16.5mm - 4.31g 17mm - 4.57g 17.5mm - 4.83g 18mm - 5.1g 18.5mm - 5.37g 19mm - 5.66g 19.5mm - 5.95g 20mm - 6.25g 20.5mm - 6.55g 21mm - 6.87g 21.5mm - 7.19g 22mm - 7.51g.