An old cut diamond 1940-50 ring, mount with 2 tones of gold, size 57-17, 16g (damage)

An old cut diamond 1940-50 ring, mount with 2 tones of gold, size 57-17, 16g (damage)

Good overall condition

Diamond : 
Total approx 1 ct 
Old european cut. 
One diamond is damaged, therer is a missing part 
Color: I-K
Clarity : VS-SI

It shows few sign of wear with few micro scratches in the gold 
It was repolished

Hallmarks : "750"