Edwardian Cabochon Ring

​​Edwardian filigree platinum ring with 18K white gold shank. Diamonds ( 9 pts total) with synthetic sapphire cabochon (1.9 ct) . The ring has a replaced shank which is 18K.  The sapphire has light surface wear. 
Size 5 1/4
Ring is of style that may be sized by a jeweler.