New micro-set ruby engagement ring Europe and the new grandmother green zircon strip $ 4.26 Material: Alloy Diameter USA UK RU FR CA BR DE circumference(mm) mm inch 5 J1/2 15.7 49.3 5 15.7 15.7 49.3 15.7 0.62 6 L1/2 16.5 51.9 6 16.5 16.5 51.9 16.5 0.65 7 N1/2(O) 17.3 54.4 7 17.3 17.3 54.4 17.3 0.68 8 P1/2(Q) 18.1 57 8 18.1 18.1 57 18.1 0.71 9 R1/2(S) 18.9 59.5 9 18.9 18.9 59.5 18.9 0.74 10 T1/2 19.8 62.1 10 19.8 19.8 62.1 19.8 0.78 11 V1/2 20.6 64.6 11 20.6 20.6 64.6 20.6 0.81 12 X1/2 21.4 67.2 12 21.4 21.4 67.2 21.4 0.84
