Opal and rose diamond ring from 1910

An Edwardian period 18 carat gold ring with three cabochon Austrailian oplas and four rose cut diamonds. The ring is hallmarked for Birmingham and the year 1910. 

The center opal measures 5 mm by 3.5 mm and there is around .22 carat of opal in total. 

The ring size is 17.50 mm, the size can be modified if necessary. 

The opals are mainly white in color with some green, blue and red speckles throughout the stones.