I cut this ring on a cnc machine ring size inside diameter 21,5 mm his weight Yellow Gold; 9 ky 17.55 gram Yellow Gold; 10 ky 18.14 gram Yellow Gold; 14 ky 20.4 gram Yellow Gold; 18 ky 24.41 gram Yellow Gold; 18 ky Royal 24.41 gram Yellow Gold; 22 ky 28.34 gram