Autre Marque White Opal Multiple colors

RING in white gold 750/1000E (18K) adorned with a large oval white opal from Australia in claw setting, supported by 2 brilliant-cut diamonds of 0,10 and each (3mm in diameter)
dimensions of the opal: 21 mm long / 14.5 mm wide / 6.3 mm thick (8,10 carats)
Total gross weight: 6,4 Gr
Ring size: 53.5
hallmark: silversmith and eagle's head on the outside of the ring + Branar mark 18K 750 + number 1430 DO16 Inside
Condition: Very good condition
réf. 479