This brooch was made in the 1940's. Women would often fashion Bowtie Brooches on collared shirts.
The brooch contains: 1 center round brilliant diamond @ 0.13ct of H-VS quality surrounded by 10 round brilliant diamonds @ 0.15ctw. The total carat weight of diamonds is 0.28ctw
The brooch measures: 63mm wide by 5.15mm high by 4mm thick
The brooch weighs 3.9g