Vintage 9 ct Gold On Sterling Silver Green Stone Cluster Ring 

The central stone looks very much like an Emerald but is a green Chrysophrase surrounded by sparkling clean Cubic Zirconia gems 

The ring is Sterling Silver with 9ct yellow gold on top , 

UK ring sz M/ N

The ring face measures  approx 11 mm's x 9 mm's 

I believe this ring to be around the 1970's . 

Impressed SILVER