White gold Omega and pendant, one 9ct white gold Omega necklet 4.9 mm wide with an inside diameter of 12.5 cm and has a total weight of 19.3 grams. Suspended from the necklet is an 18ct white gold (tested as 18ct) pearl and diamond pendant. Approximate diamond weight 1.60ct. Pearl measures as 14.5 x 16.1 mm off white to pale yellowish colour good lustre. Approximate gold weight: 7.2 grams.