Collection of diamond rings i 18ct white gold set with 0.25CT GVS round brilliant diamond weight: 4.2 grams. ii 18ct white gold set with 0.65CT GHSI round brilliant diamond weight: 9.0grams. iii 18ct white gold set with 0.22CT GSI round brilliant diamond weight: 9.0 grams. iv 18ct white gold set with 0.12CT GSI round brilliant diamond weight: 11.0 grams.