Antique onyx and diamond ring

An antique 14 carat gold and silver ring with 16 rose cut diamonds and 9 old cut diamonds set in a onyx halo. 

The old cut diamonds are .18 carat in total, SI1 to Pique 1 in quality and I in color. The setting maeasures 16.5 mm by 13 mm, the ring weighs 3.4 grams. 

The ring size is 17.75 mm, the size can be modified if necesary. 

The ring is in good overall conditionand and has an old Dutch 14 carat gold hallmark on the lower outer shank.