This is a real showstopper of a ring. An emerald and rose cut diamonds are set in silver fronted gold settings in the classic Victorian way, and arranged into a gorgeous open work navette design. 
This motif was originally made as a brooch, and we have reused the gold bar to make the split shouldered shank. 
Tested as 9ct gold and silver 
Weight approx 4.69g
Length of navette approx 33mm
Width of shank at back approx 2.6mm
Finger size K1/2 (approx US size 5.75)
Emerald and diamonds tested as natural, earth mined stones. 
Very good antique condition