This is an antique cameo ring set on a 9ct gold ring.
Metal: 9ct gold.
Marks: WN, 375, chester, 1931.
Stones: Onyx.
Measurements: 10.3mm x 7.5mm. 1.5mm at the back of the band.
Weight: 1.23 grams.
Condition: Excellent.
Finger size: UK O, USA & Canada 7.