Antique diamond ring in silver and 14 kt gold

Antique diamond ring in silver and 14 kt gold. The diamonds are set in silver, the frame and the ring skin are made of 14 kt gold.
The ring is not stamped but acid tested to a value of 14 kt.
Measure on the front of the ring 15 x 25 mm.
Ring size 48
Item no.: 485914