A star sapphire and diamond ring, centring on a cabochon star sapphire framed by baguette and circular-cut diamond shoulders, c. 1950, ring size P

A star sapphire and diamond ring, centring on a cabochon star sapphire framed by baguette and circular-cut diamond shoulders, c. 1950, ring size P
Good condition, abrasions and scratches commensurate with age mount stamped irid plat for platinum, gross weight 9.4 grams, grey star sapphire with medium to good asterism, measuring approximately 10.2 x 9.9 x 5.8 = 6.33 carats, diamonds bright and lively, approximately 1.00-1.50 carats in total, H/I, Vs on average