Woodbridge Antiques has dated this piece to the 1950s.
The rest of the band is in smooth polished gold.

The look here is 1950's cocktail party. A fun item of jewellery, nicely designed and very eye-catching! Perfect for lovers of vintage style and glamour. In great condition.
Measurements: Ring size K Curved setting width 1.4 cm; shoulder to shoulder: 2.4 cm Width at base of band: 1.3 mm Weight: 3.71 grams
All 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