Set with round natural sapphire of 0.50ct approx. 
in 9K Rose/Yellowish Gold 

stamped W. 9 D.
by William Drummond & Co. - one of the most premier jewelry houses in Melbourne in Art-Deco period
circa 1920’s 

Total item’s weight: 6.5gr. 

Ring’s size: R 1/2 (can be re-sized)