Brooch and Earrings with Crystal Opals and Diamonds, 18K Gold

18 karat yellow and white gold Hallmarked with the British purity mark, London city mark, year letter ‘B’ (1976) Brooch with a crystal opal of c. 17.3 x 12.5 mm With 24 old cut diamonds with a total weight of c. 6,5 ct., good to very good color and c