This is a one of a kind diamond ring. It was hand crafted in Athens, Greece around the late 1960's by my grandmother's brother-in-law in a small multi-generation goldsmith shop located in the Plaka section of Athens. from 2 older rings circa late 1950's. It has not been certified but it has been inspected by different jewelers. The center diamond is estimated to be around a 1/2 carat, the color from H - J, and the GIA SI1...