diamond and turquoise ring

An 18 carat navette shaped cluster ring with ten very good old cut diamonds (app. 1 carat) around an oval cabochon cut turquoise, the diamonds are open set and the turquoise is closed set, the shank is decorated with a double ‘pearl’ band, England, circa 1890.

weight: 3.4 grams
ring size: 16.5 mm. 6 US.