Hallmarked: 18ct Gold 
Date: 1977
Assay Office: London 
Makers Mark: BR
Size: UK L  US 6 EU 52
Weight: 3.6g
Diamonds: 2 x 3.7mm 0.33ct each total 0.66ct
Sapphire: 5.3mm 0.55ct 
Good clean Vintage condition. Resizing available.