A FRENCH MID 20TH CENTURY DIAMOND BROOCHthe pierced geometric brooch set with old brilliant cut diamonds and baguette cut diamonds, approximately 4.07 carats total, stamped with French poinçonsSIZE/DIMENSIONS: 3.8cm longGROSS WEIGHT: 10.4 grams Condition Report The diamonds are all present and correct, bright and lively, clarity VS-SI, colour estimated I-K, the brooch pin is later, it would have been a clip brooch, but the original pin has been removed. The makers mark is a bit rubbed, French platinum poincon