Vintage Victorian Platinum Diamond Bow Brooch. 4.00ct TwVictorian vintage Platinum and diamond Bow Brooch. This beautiful brooch features a bezel set European cut diamond in the centre of the brooch measuring approximately 0. 56 carat weight of (VS 2) in clarity and (I) in colour. Also containing 39 x 2. 25 total carat weight of European cut diamonds of (VS I 1) in clarity. Also featuring 65 x Swiss cut diamonds weighing approximately 1. 10 total carat weight of (VS 1 SI 2) in clarity and (I J) in colour.