Art Deco 1940 Iridium Platinum .35 Ct Old European Cut Diamond Ring

1940's stamped iridium/platinum ring featuring an old European cut diamond measuring approx. 4.62 mm diameter, .35 ct. I am a GIA diamond graduate and its tricky determining color when diamonds are set-but this diamond is whitish with very little yellow and I'd estimate the color around H-I color. Under the microscope this is a clean diamond-I'd estimate around VS2 clarity. Beautiful cut with an open culet. 

The diamond is securely held by four prongs. On each shoulder are four round cut diamonds channel set. Each diamond is around 1 mm diameter.

Currently a size 5.5 but message if you need sizing service.

2.4 grams

Overall this piece is in very good vintage condition.