Platinum filigree ring circa 1925, Set with a 1.22 ct GIA certified Diamond, Size 7, weighs 2.5 grams
GIA 2151322336 - 1.22 ct, K, I1, Old European Cut ; two loose diamonds 0.02 cttw,
Please note that this ring isn't marked, but we have tested it and guarantee it to be made of platinum.
The GIA is internationally known as the "gold standard" independent diamond certification laboratory. Located in New York city, they grade diamonds for color and clarity.