Roselane Antiques has dated this Platinum Diamond Cluster Ring to the 1920s.
The diamonds on the bridge in the main cluster are held very securely by six prongs.
The shoulders on the platinum shank are inlaid with 2 diamonds either side of the cluster.
Total diamonds approx 1.3ct.
Ring is 2nd from the bottom in video.
Roselane Antiques has dated this Platinum Diamond Cluster Ring to the 1920s.
You can view the stock and full dealer information on the Roselane Antiques Profile Page