Woodbridge Antiques has dated this piece to the 1950s.
The opal is oval in shape, and sits flat in its neat claw setting. There is a pierced scroll detail on the gold gallery setting. Inside the band is marked 18ct.

A sensational ring with an eye-catching opal in a charming setting. In great pre-owned condition.
Measurements: Opal: 1.6 cm x 1.1mm diameter width. Width of band at base: 1.2 mm Weight: 3.75 grams
Weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1950s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page