Art Deco sapphire and diamond cluster ring

Art Deco Sapphire And Diamond Ring, circa 1930, 18ct white gold and platinum mount, of geometric design with central Sri Lankan sapphire of 3.8mm surrounded by eight panels each set with a round 8 cut diamond of approximately 1.7mm. 

Sapphire of estimated weight 0.23ct. Diamond weight estimated as 0.16ct.

Head 12mm diameter.

Finger size K.