Woodbridge Antiques has dated this piece to the 1930s.
The ring is marked on the inside band 18ct gold and PLAT. A gorgeous ring, great a a gift or for an engagement.

Marked: 18ct 7 PLAT
Period: Circa 1930
Measurements: Ring size Q
Width across 3-stone setting: 1.3 cm Depth of setting at widest part: 6.9 mm
Width of band at base: 2 mm
Weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1930s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page